Exhibit 1.1

                                                                    May __, 2000


BANC OF AMERICA SECURITIES LLC
DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION
SALOMON SMITH BARNEY INC.
U.S. BANCORP PIPER JAFFRAY INC.
As Representatives of the several Underwriters
c/o BANC OF AMERICA SECURITIES LLC
600 Montgomery Street
San Francisco, California  94111


Ladies and Gentlemen:

          Introductory.  Entegris, Inc., a corporation organized under the laws
of Minnesota (the "Company"), proposes to issue and sell to the several
underwriters named in Schedule A (the "Underwriters") an aggregate of 8,600,000
of its common shares, par value $0.01 per share (the "Common Shares"); and
Entegris, Inc. Employee Stock Ownership Plan (the "Plan") and WCB Holding LLC
("WCB") propose to sell to the Underwriters an aggregate of 4,400,000 Common
Shares.  The Plan and WCB are sometimes collectively referred to herein as the
"Selling Shareholders."  The 8,600,000 Common Shares to be sold by the Company
and the 4,400,000 Common Shares to be sold by the Selling Shareholders are
collectively called the "Firm Shares." In addition, the Company and WCB have
granted to the Underwriters an option to purchase up to an additional 1,950,000
Common Shares as provided in Section 2.  The additional 1,950,000 Common Shares
to be sold by the Company and WCB are called the "Optional Shares."  The Firm
Shares and, if and to the extent such option is exercised, the Optional Shares
are collectively called the "Shares."  Banc of America Securities LLC,
Donaldson, Lufkin & Jenrette Securities Corporation, Salomon Smith Barney Inc.
and U.S. Bancorp Piper Jaffray Inc. have agreed to act as representatives of the
several Underwriters (in such capacity, the "Representatives") in connection
with the offering and sale of the Shares.

          The Company has prepared and filed with the Securities and Exchange
Commission (the "Commission") a registration statement on Form S-1 (File No.
333-33668), which contains a form of prospectus to be used in connection with
the public offering and sale of the Shares.  Such registration statement, as
amended, including the financial statements, exhibits and schedules thereto, in
the form in which it was declared effective by the Commission under the
Securities Act of 1933, as amended, and the rules and regulations promulgated
thereunder (collectively, the "Securities Act"), including any information
deemed to be a part thereof at the time of effectiveness pursuant to Rule 430A
or Rule 434 under the Securities Act, is called the "Registration Statement."
Any registration statement filed by the Company pursuant to Rule 462(b) under
the Securities Act is called the "Rule 462(b) Registration Statement", and from
and after the date and time of filing of the Rule 462(b) Registration Statement
the term "Registration Statement" shall include the Rule 462(b) Registration
Statement.  Such prospectus, in the form first used by the Underwriters to
confirm sales of the Shares, is called the


"Prospectus"; provided, however, if the Company has, with the consent of the
Representatives, elected to rely upon Rule 434 under the Securities Act, the
term "Prospectus" shall mean the Company's prospectus subject to completion
(each, a "preliminary prospectus") dated ________ ___, ______, together with the
applicable term sheet (the "Term Sheet") prepared and filed by the Company with
the Commission under Rules 434 and 424(b) under the Securities Act and all
references in this Agreement to the date of the Prospectus shall mean the date
of the Term Sheet. All references in this Agreement to the Registration
Statement, the Rule 462(b) Registration Statement, a preliminary prospectus, the
Prospectus or the Term Sheet, or any amendments or supplements to any of the
foregoing, shall include any copy thereof filed with the Commission pursuant to
its Electronic Data Gathering, Analysis and Retrieval System ("EDGAR").

          The Company and each of the Selling Shareholders hereby confirm their
respective agreements with the Underwriters as follows:

     Section 1.  Representations and Warranties.

     A.  Representations and Warranties of the Company.  The Company hereby
represents, warrants and covenants to each Underwriter as follows:

         (a) Compliance with Registration Requirements. The Registration
     Statement and any Rule 462(b) Registration Statement have been declared
     effective by the Commission under the Securities Act. The Company has
     complied to the Commission's satisfaction with all requests of the
     Commission for additional or supplemental information. No stop order
     suspending the effectiveness of the Registration Statement or any Rule
     462(b) Registration Statement is in effect and no proceedings for such
     purpose have been instituted or are pending or, to the best knowledge of
     the Company, are contemplated or threatened by the Commission.

          Each preliminary prospectus and the Prospectus when filed complied in
     all material respects with the Securities Act and, if filed by electronic
     transmission pursuant to EDGAR (except as may be permitted by Regulation S-
     T under the Securities Act), was identical to the copy thereof delivered to
     the Underwriters for use in connection with the offer and sale of the
     Shares.  Each of the Registration Statement, any Rule 462(b) Registration
     Statement and any post-effective amendment thereto, at the time it became
     effective and at all subsequent times up to and including the last to occur
     of (i) the First Closing Date (and, if any Optional Shares are purchased,
     the Second Closing Date, if applicable) and (ii) the last day of the
     Prospectus Delivery Period (as defined in Section 3(A)(a) below), complied
     and will comply in all material respects with the Securities Act and did
     not and will not contain any untrue statement of a material fact or omit to
     state a material fact required to be stated therein or necessary to make
     the statements therein not misleading.  The Prospectus, as amended or
     supplemented, as of its date and at all subsequent times up to and
     including the last to occur of (i) the First Closing Date (and, if any
     Optional Shares are purchased, the Second Closing Date, if applicable) and
     (ii) the last day of the Prospectus Delivery Period, did not and will not
     contain any untrue statement of a material fact or omit to state a material
     fact necessary in order to make the statements therein, in the light of the
     circumstances under which they were made, not misleading.  The
     representations and warranties set forth in the two immediately

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     preceding sentences do not apply to statements in or omissions from the
     Registration Statement, any Rule 462(b) Registration Statement, or any
     post-effective amendment thereto, or the Prospectus, or any amendments or
     supplements thereto, made in reliance upon and in conformity with
     information relating to any Underwriter furnished to the Company in writing
     by the Representatives expressly for use therein. There are no contracts or
     other documents required to be described in the Prospectus or to be filed
     as exhibits to the Registration Statement which have not been described or
     filed as required.

          (b) Offering Materials Furnished to Underwriters. The Company has
     delivered to the Representatives four complete manually signed copies of
     the Registration Statement and of each consent and certificate of experts
     filed as a part thereof, and conformed copies of the Registration Statement
     (without exhibits) and preliminary prospectuses and the Prospectus, as
     amended or supplemented, in such quantities and at such places as the
     Representatives have reasonably requested for each of the Underwriters.

          (c) Distribution of Offering Material By the Company. The Company has
     not distributed and will not distribute, prior to the later of the Second
     Closing Date (as defined below) and the completion of the Underwriters'
     distribution of the Shares, any offering material in connection with the
     offering and sale of the Shares other than a preliminary prospectus, the
     Prospectus or the Registration Statement.

          (d) The Underwriting Agreement. This Agreement has been duly
     authorized, executed and delivered by, and is a valid and binding agreement
     of, the Company, enforceable in accordance with its terms, except as rights
     to indemnification hereunder may be limited by applicable law and except as
     the enforcement hereof may be limited by bankruptcy, insolvency,
     reorganization, moratorium or other similar laws relating to or affecting
     the rights and remedies of creditors or by general equitable principles.

          (e) Authorization of the Shares. The Shares to be purchased by the
     Underwriters from the Company have been duly authorized for issuance and
     sale pursuant to this Agreement and, when issued and delivered by the
     Company pursuant to this Agreement, will be validly issued, fully paid and
     nonassessable.

          (f) No Applicable Registration or Other Similar Rights. There are no
     persons with registration or other similar rights to have any equity or
     debt securities registered for sale under the Registration Statement or
     included in the offering contemplated by this Agreement, except for such
     rights as have been duly waived or complied with.

          (g)  No Material Adverse Change.  Except as otherwise disclosed in the
     Prospectus, subsequent to the respective dates as of which information is
     given in the Prospectus: (i)  there has been no material adverse change, or
     any development that could reasonably be expected to result in a material
     adverse change, in the condition, financial or otherwise, or in the
     earnings, business, operations or prospects, whether or not arising from
     transactions in the ordinary course of business, of the Company and its
     subsidiaries, considered as one entity (any such change is called a
     "Material Adverse Change"); (ii) the Company and its subsidiaries,
     considered as one entity, have not incurred any

                                       3


     material liability or obligation, indirect, direct or contingent, not in
     the ordinary course of business nor entered into any material transaction
     or agreement not in the ordinary course of business; and (iii) there has
     been no dividend or distribution of any kind declared, paid or made by the
     Company or, except for dividends paid to the Company or other subsidiaries,
     any of its subsidiaries on any class of capital stock or repurchase or
     redemption by the Company or any of its subsidiaries of any class of
     capital stock.

          (h) Independent Accountants. KPMG LLP and Arthur Andersen LLP, who
     have expressed their opinion with respect to the financial statements
     (which term as used in this Agreement includes the related notes thereto)
     filed with the Commission as a part of the Registration Statement and
     included in the Prospectus, are independent public or certified public
     accountants as required by the Securities Act.

          (i) Preparation of the Financial Statements. The financial statements
     filed with the Commission as a part of the Registration Statement and
     included in the Prospectus present fairly the consolidated financial
     position of the Company and its subsidiaries as of and at the dates
     indicated and the results of their operations and cash flows for the
     periods specified. Such financial statements have been prepared in
     conformity with United States generally accepted accounting principles
     applied on a consistent basis throughout the periods involved, except as
     may be expressly stated in the related notes thereto. No other financial
     statements or supporting schedules are required to be included in the
     Registration Statement. The financial data set forth in the Prospectus
     under the captions "Prospectus Summary-Summary Consolidated Financial
     Data", "Selected Consolidated Financial Data" and "Capitalization" fairly
     present the information set forth therein on a basis consistent with that
     of the audited financial statements contained in the Registration
     Statement.

          (j) Incorporation and Good Standing of the Company and its
     Subsidiaries. Each of the Company and its subsidiaries has been duly
     incorporated and is validly existing as a corporation in good standing
     under the laws of the jurisdiction of its incorporation and has corporate
     power and authority to own, lease and operate its properties and to conduct
     its business as described in the Prospectus and, in the case of the
     Company, to enter into and perform its obligations under this Agreement.
     Each of the Company and each subsidiary is duly qualified as a foreign
     corporation to transact business and is in good standing in each
     jurisdiction in which such qualification is required, whether by reason of
     the ownership or leasing of property or the conduct of business, except for
     such jurisdictions where the failure to so qualify or to be in good
     standing would not, individually or in the aggregate, result in a Material
     Adverse Change. All of the issued and outstanding capital stock of each
     subsidiary has been duly authorized and validly issued, is fully paid and
     nonassessable and is owned by the Company, directly or through
     subsidiaries, free and clear of any security interest, mortgage, pledge,
     lien, encumbrance or claim. Fluoroware, Inc. and Empak, Inc. are the only
     significant subsidiaries (as defined in Rule 405 under the Securities Act)
     of the Company. The Company does not own or control, directly or
     indirectly, any corporation, association or other entity other than the
     subsidiaries listed in Exhibit 21.1 to the Registration Statement.

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          (k) Capitalization and Other Capital Shares Matters. The authorized,
     issued and outstanding capital stock of the Company is as set forth in the
     Prospectus under the caption "Capitalization" (other than for subsequent
     issuances, if any, pursuant to employee benefit plans described in the
     Prospectus or upon exercise of outstanding options described in the
     Prospectus). The Common Shares (including the Shares) conform in all
     material respects to the description thereof contained in the Prospectus.
     All of the issued and outstanding Common Shares (including the Common
     Shares owned by the Selling Shareholders) have been duly authorized and
     validly issued, are fully paid and nonassessable and have been issued in
     compliance with federal and state securities laws. None of the outstanding
     Common Shares were issued in violation of any preemptive rights, rights of
     first refusal or other similar rights to subscribe for or purchase
     securities of the Company. There are no authorized or outstanding options,
     warrants, preemptive rights, rights of first refusal or other rights to
     purchase, or equity or debt securities convertible into or exchangeable or
     exercisable for, any capital stock of the Company or any of its
     subsidiaries other than those accurately described in the Prospectus. The
     description of the Company's stock option, stock bonus and other stock
     plans or arrangements, and the options or other rights granted thereunder,
     set forth in the Prospectus accurately and fairly presents the information
     required to be shown with respect to such plans, arrangements, options and
     rights.

          (l) Stock Exchange Listing. The Common Shares have been approved for
     listing on the Nasdaq National Market, subject only to official notice of
     issuance.

          (m) Non-Contravention of Existing Instruments; No Further
     Authorizations or Approvals Required. Neither the Company nor any of its
     subsidiaries is in violation of its charter or by-laws or is in default
     (or, with the giving of notice or lapse of time, would be in default)
     ("Default") under any indenture, mortgage, loan or credit agreement, note,
     contract, franchise, lease or other instrument to which the Company or any
     of its subsidiaries is a party or by which it or any of them may be bound
     or to which any of the property or assets of the Company or any of its
     subsidiaries is subject including, without limitation, the Plan and the
     documents or instruments governing the Plan (each, an "Existing
     Instrument"), except for such Defaults as would not, individually or in the
     aggregate, result in a Material Adverse Change. The Company's

                                       5


     execution, delivery and performance of this Agreement and consummation of
     the transactions contemplated hereby and by the Prospectus (i) have been
     duly authorized by all necessary corporate action and will not result in
     any violation of the provisions of the charter or by-laws of the Company or
     any subsidiary, (ii) will not conflict with or constitute a breach of, or
     Default or a Debt Repayment Triggering Event (as defined below) under, or
     result in the creation or imposition of any lien, charge or encumbrance
     upon any property or assets of the Company or any of its subsidiaries
     pursuant to, or require the consent of any other party to, any Existing
     Instrument, except for such conflicts, breaches, Defaults, liens, charges
     or encumbrances as would not, individually or in the aggregate, result in a
     Material Adverse Change, (iii) will not trigger any excise or other taxes
     in connection with the Plan and (iv) will not result in any violation of
     any law, administrative regulation or administrative or court decree
     applicable to the Company or any subsidiary. No consent, approval,
     authorization or other order of, or registration or filing with, any court
     or other governmental or regulatory authority or agency, is required for
     the Company's execution, delivery and performance of this Agreement and
     consummation of the transactions contemplated hereby and by the Prospectus,
     except such as have been obtained or made by the Company and are in full
     force and effect under the Securities Act, applicable state securities or
     blue sky laws and from the National Association of Securities Dealers, Inc.
     (the "NASD"). As used herein, a "Debt Repayment Triggering Event" means any
     event or condition which gives, or with the giving of notice or lapse of
     time would give, the holder of any note, debenture or other evidence of
     indebtedness (or any person acting on such holder's behalf) the right to
     require the repurchase, redemption or repayment of all or a portion of such
     indebtedness by the Company or any of its subsidiaries.

          (n) No Material Actions or Proceedings. There are no legal or
     governmental actions, suits or proceedings pending or, to the best of the
     Company's knowledge, threatened (i) against or affecting the Company or any
     of its subsidiaries, (ii) which has as the subject thereof any officer or
     director of, or property owned or leased by, the Company or any of its
     subsidiaries or (iii) relating to environmental or discrimination matters,
     where in any such case (A) there is a reasonable possibility that such
     action, suit or proceeding might be determined adversely to the Company or
     such subsidiary and (B) any such action, suit or proceeding, if so
     determined adversely, would reasonably be expected to result in a Material
     Adverse Change or adversely affect the consummation of the transactions
     contemplated by this Agreement. No labor dispute with the employees of the
     Company or any of its subsidiaries exists or, to the best of the Company's
     knowledge, is threatened or imminent. The Company is not aware of any
     existing or imminent labor disturbance by the employees of any of its
     material suppliers which may reasonably be expected to result in a Material
     Adverse Change.

          (o) Intellectual Property Rights. The Company and its subsidiaries own
     or possess sufficient trademarks, trade names, patent rights, copyrights,
     licenses, approvals, trade secrets and other similar rights (collectively,
     "Intellectual Property Rights") reasonably necessary to conduct their
     businesses as now conducted; and the expected expiration of any of such
     Intellectual Property Rights would not result in a Material Adverse Change.
     Neither the Company nor any of its subsidiaries has received any notice of
     infringement or conflict with asserted Intellectual Property Rights of
     others, which infringement or conflict, if the subject of an unfavorable
     decision, would result in a Material Adverse Change.

          (p) All Necessary Permits, etc. The Company and each subsidiary
     possess such valid and current certificates, authorizations or permits
     issued by the appropriate state, federal or foreign regulatory agencies or
     bodies necessary to conduct their respective businesses, and neither the
     Company nor any subsidiary has received any notice of proceedings relating
     to the revocation or modification of, or non-compliance with, any such
     certificate, authorization or permit which, singly or in the aggregate, if
     the subject of an unfavorable decision, ruling or finding, could result in
     a Material Adverse Change.

          (q) Title to Properties. The Company and each of its subsidiaries has
     good and marketable title to all the properties and assets reflected as
     owned in the financial

                                       6


     statements referred to in Section 1(A)(i) above (or elsewhere in the
     Prospectus), in each case free and clear of any security interests,
     mortgages, liens, encumbrances, equities, claims and other defects, except
     such as do not materially and adversely affect the value of such property
     and do not materially interfere with the use made or proposed to be made of
     such property by the Company or such subsidiary. The real property,
     improvements, equipment and personal property held under lease by the
     Company or any subsidiary are held under valid and enforceable leases, with
     such exceptions as are not material and do not materially interfere with
     the use made or proposed to be made of such real property, improvements,
     equipment or personal property by the Company or such subsidiary.

          (r) Tax Law Compliance. The Company and its consolidated subsidiaries
     have filed all necessary federal, state, local and foreign income and
     franchise tax returns or have properly requested extensions thereof and
     have paid all taxes required to be paid by any of them and, if due and
     payable, any related or similar assessment, fine or penalty levied against
     any of them, except as are being contested in good faith and by appropriate
     procedures. The Company has made adequate charges, accruals and reserves in
     the applicable financial statements referred to in Section 1(A)(i) above in
     respect of all federal, state, local and foreign income and franchise taxes
     for all periods as to which the tax liability of the Company or any of its
     consolidated subsidiaries has not been finally determined.

          (s) Company Not an "Investment Company." The Company is not, and after
     receipt of payment for the Shares to be sold by it will not be, an
     "investment company" within the meaning of Investment Company Act of 1940,
     as amended (the "Investment Company Act"), and will conduct its business in
     a manner so that it will not become subject to the Investment Company Act.

          (t) Insurance. Each of the Company and its subsidiaries are insured by
     recognized, financially sound and reputable institutions with policies in
     such amounts and with such deductibles and covering such risks as are
     generally deemed adequate and customary for their businesses including, but
     not limited to, policies covering real and personal property owned or
     leased by the Company and its subsidiaries against theft, damage,
     destruction and acts of vandalism. To the best of the Company's knowledge,
     the Company and its subsidiaries will be able (i) to renew existing
     insurance coverage as and when such policies expire or (ii) to obtain
     comparable coverage from similar institutions as may be necessary or
     appropriate to conduct their business as now conducted and at a cost that
     would not result in a Material Adverse Change. Neither of the Company nor
     any subsidiary has been denied any insurance coverage which it has sought
     or for which it has applied.

          (u) No Price Stabilization or Manipulation. The Company has not taken
     and will not take, directly or indirectly, any action designed to or that
     might be reasonably expected to cause or result in stabilization or
     manipulation of the price of the Common Shares to facilitate the sale or
     resale of the Shares.

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          (v) Related Party Transactions. There are no business relationships or
     related-party transactions involving the Company or any subsidiary or any
     other person required to be described in the Prospectus which have not been
     described as required.

          (w) No Unlawful Contributions or Other Payments. Neither the Company
     nor any of its subsidiaries nor, to the best of the Company's knowledge,
     any employee or agent of the Company or any subsidiary, has made any
     contribution or other payment to any official of, or candidate for, any
     federal, state or foreign office in violation of any law or of the
     character required to be disclosed in the Prospectus.

          (x) Company's Accounting System. The Company maintains a system of
     accounting controls sufficient to provide reasonable assurances that (i)
     transactions are executed in accordance with management's general or
     specific authorization; (ii) transactions are recorded as necessary to
     permit preparation of financial statements in conformity with generally
     accepted accounting principles as applied in the United States and to
     maintain accountability for assets; (iii) access to assets is permitted
     only in accordance with management's general or specific authorization; and
     (iv) the recorded accountability for assets is compared with existing
     assets at reasonable intervals and appropriate action is taken with respect
     to any differences.

          (y) Compliance with Environmental Laws. Except as would not,
     individually or in the aggregate, result in a Material Adverse Change (i)
     neither the Company nor any of its subsidiaries is in violation of any
     federal, state, local or foreign law or regulation relating to pollution or
     protection of human health or the environment (including, without
     limitation, ambient air, surface water, groundwater, land surface or
     subsurface strata) or wildlife, including without limitation, laws and
     regulations relating to emissions, discharges, releases or threatened
     releases of chemicals, pollutants, contaminants, wastes, toxic substances,
     hazardous substances, petroleum and petroleum products (collectively,
     "Materials of Environmental Concern"), or otherwise relating to the
     manufacture, processing, distribution, use, treatment, storage, disposal,
     transport or handling of Materials of Environmental Concern (collectively,
     "Environmental Laws"), which violation includes, but is not limited to,
     noncompliance with any permits or other governmental authorizations
     required for the operation of the business of the Company or its
     subsidiaries under applicable Environmental Laws, or noncompliance with the
     terms and conditions thereof, nor has the Company or any of its
     subsidiaries received any written communication, whether from a
     governmental authority, citizens group, employee or otherwise, that alleges
     that the Company or any of its subsidiaries is in violation of any
     Environmental Law; (ii) there is no claim, action or cause of action filed
     with a court or governmental authority, no investigation with respect to
     which the Company has received written notice, and no written notice by any
     person or entity alleging potential liability for investigatory costs,
     cleanup costs, governmental responses costs, natural resources damages,
     property damages, personal injuries, attorneys' fees or penalties arising
     out of, based on or resulting from the presence, or release into the
     environment, of any Material of Environmental Concern at any location
     owned, leased or operated by the Company or any of its subsidiaries, now or
     in the past (collectively, "Environmental Claims"), pending or, to the best
     of the Company's knowledge, threatened against the Company or any of its
     subsidiaries or any person or entity whose

                                       8


     liability for any Environmental Claim the Company or any of its
     subsidiaries has retained or assumed either contractually or by operation
     of law; and (iii) to the best of the Company's knowledge, there are no past
     or present actions, activities, circumstances, conditions, events or
     incidents, including, without limitation, the release, emission, discharge,
     presence or disposal of any Material of Environmental Concern, that
     reasonably could result in a violation of any Environmental Law or form the
     basis of a potential Environmental Claim against the Company or any of its
     subsidiaries or against any person or entity whose liability for any
     Environmental Claim the Company or any of its subsidiaries has retained or
     assumed either contractually or by operation of law.

          (z) ERISA Compliance. The Company and its subsidiaries and any
     "employee benefit plan" (as defined under the Employee Retirement Income
     Security Act of 1974, as amended, and the regulations and published
     interpretations thereunder (collectively, "ERISA")) established or
     maintained by the Company, its subsidiaries or their "ERISA Affiliates" (as
     defined below) are in compliance in all material respects with ERISA and
     the Internal Revenue Code of 1986, as amended, and the regulations and
     published interpretations thereunder (the "Code"). "ERISA Affiliate" means,
     with respect to the Company or a subsidiary, any member of any group of
     organizations described in Sections 414(b),(c),(m) or (o) of the Code of
     which the Company or such subsidiary is a member. No "reportable event" (as
     defined under ERISA) has occurred or is reasonably expected to occur with
     respect to any "employee benefit plan" established or maintained by the
     Company, its subsidiaries or any of their ERISA Affiliates. No "employee
     benefit plan" established or maintained by the Company, its subsidiaries or
     any of their ERISA Affiliates, if such "employee benefit plan" were
     terminated, would have any "amount of unfunded benefit liabilities" (as
     defined under ERISA). Neither the Company, its subsidiaries nor any of
     their ERISA Affiliates has incurred or reasonably expects to incur any
     liability under (i) Title IV of ERISA with respect to termination of, or
     withdrawal from, any "employee benefit plan" or (ii) Sections 412, 4971,
     4975 or 4980B of the Code. Each "employee benefit plan" established or
     maintained by the Company, its subsidiaries or any of their ERISA
     Affiliates that is intended to be qualified under Section 401(a) of the
     Code is so qualified and nothing has occurred, whether by action or failure
     to act, which would cause the loss of such qualification.

          (aa) Year 2000. All disclosure regarding year 2000 compliance that is
     required to be described under the Securities Act (including disclosures
     required by Staff Legal Bulletin No. 5) has been included in the
     Prospectus. The Company has not incurred, and does not expect to incur, any
     operating expenses or costs to ensure that its information systems will be
     year 2000 complaint, other than as disclosed in the Prospectus.

          (bb) Directed Shares. No consent, approval, authorization or order of,
     or qualification with, any governmental body or agency, other than those
     obtained, is required in connection with the offering of the Directed
     Shares (as defined in Section 2 below). The Company has not offered, or
     caused the Underwriters to offer, Shares to any person pursuant to the
     directed share program with the specific intent to unlawfully influence (i)
     a customer or supplier of the Company to alter the customer's or supplier's
     level or type of business with the Company, or (ii) a trade journalist or
     publication to write or publish favorable information about the Company or
     its products.

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          Any certificate signed by an officer of the Company and delivered to
the Representatives or to counsel for the Underwriters in connection with the
consummation of the transactions contemplated hereby shall be deemed to be a
representation and warranty by the Company to each Underwriter as to the matters
set forth therein.

     B. Representations and Warranties of the Selling Shareholders. In addition
to the representations, warranties and covenants set forth in Section 1(A):

          (a) Each Selling Shareholder severally and not jointly represents,
     warrants and covenants to each Underwriter as follows:

          (i) The Underwriting Agreement. This Agreement has been duly
     authorized, executed and delivered by or on behalf of such Selling
     Shareholder and is a valid and binding agreement of such Selling
     Shareholder, enforceable in accordance with its terms, except as rights to
     indemnification hereunder may be limited by applicable law and except as
     the enforcement hereof may be limited by bankruptcy, insolvency,
     reorganization, moratorium or other similar laws relating to or affecting
     the rights and remedies of creditors or by general equitable principles.

          (ii) The Custody Agreement. The Custody Agreement signed by such
     Selling Shareholder and [_____], as custodian (the "Custodian"), relating
     to the deposit of the Shares to be sold by such Selling Shareholder (the
     "Custody Agreement"), has been duly authorized, executed and delivered by
     such Selling Shareholder and is a valid and binding agreement of such
     Selling Shareholder, enforceable in accordance with its terms, except as
     rights to indemnification thereunder may be limited by applicable law and
     except as the enforcement thereof may be limited by bankruptcy, insolvency,
     reorganization, moratorium or other similar laws relating to or affecting
     the rights and remedies of creditors or by general equitable principles.

          (iii) Title to Shares to be Sold; All Authorizations Obtained. Such
     Selling Shareholder has, and on the First Closing Date (as defined below)
     will have, valid title to all of the Shares which may be sold by Selling
     Shareholder pursuant to this Agreement on such date and the legal right and
     power, and all authorizations and approvals required by law and, if
     applicable, under its charter or by laws, limited liability company
     agreement or other organizational documents to enter into this Agreement to
     sell, transfer and deliver all of the Shares which may be sold by such
     Selling Shareholder pursuant to this Agreement and to comply with its other
     obligations hereunder and thereunder.

          (iv) Delivery of the Shares to be Sold. Delivery of the Shares which
     are sold by such Selling Shareholder pursuant to this Agreement will pass
     good and valid title to such Common Shares, free and clear of any security
     interest, mortgage, pledge, lien, encumbrance or other claim.

          (v) Non-Contravention; No Further Authorizations or Approvals
     Required. The execution and delivery by such Selling Shareholder of, and
     the performance by such Selling Shareholder of its obligations under, this
     Agreement and the Custody Agreement will not contravene or conflict with,
     result in a breach of, or constitute a Default under, or

                                       10


     require the consent of any other party to, the charter or by-laws, limited
     liability company agreement or other organizational documents of such
     Selling Shareholder or any other agreement or instrument to which such
     Selling Shareholder is a party or by which it is bound or under which it is
     entitled to any right or benefit, any provision of applicable law or any
     judgment, order, decree or regulation applicable to such Selling
     Shareholder of any court, regulatory body, administrative agency,
     governmental body or arbitrator having jurisdiction over such Selling
     Shareholder. No consent, approval, authorization or other order of, or
     registration or filing with, any court or other governmental authority or
     agency, is required for the consummation by such Selling Shareholder of the
     transactions contemplated in this Agreement, except such as have been, or
     will be, obtained or made by the Company, the trustee under the Plan or the
     Underwriters and are, or will be, in full force and effect under the
     Securities Act, applicable state securities or blue sky laws and from the
     NASD.

          (vi) No Registration or Other Similar Rights. Such Selling Shareholder
     does not have any registration or other similar rights to have any equity
     or debt securities registered for sale by the Company under the
     Registration Statement or included in the offering contemplated by this
     Agreement, except for such rights as are described in the Prospectus under
     "Shares Eligible for Future Sale."

          (vii) No Further Consents, etc. No consent, approval or waiver is
     required under any instrument or agreement to which such Selling
     Shareholder is a party or by which it is bound or under which it is
     entitled to any right or benefit, in connection with the offering, sale or
     purchase by the Underwriters of any of the Shares which may be sold by such
     Selling Shareholder under this Agreement or the consummation by such
     Selling Shareholder of any of the other transactions contemplated hereby.

          (viii) Disclosure Made by Such Selling Shareholder in the Prospectus.
     All information furnished by or on behalf of such Selling Shareholder in
     writing expressly for use in the Registration Statement and Prospectus is,
     and on the First Closing Date and the Second Closing Date will be, true,
     correct, and complete in all material respects, and does not, and on the
     First Closing Date and the Second Closing Date will not, contain any untrue
     statement of a material fact or omit to state any material fact necessary
     to make such information not misleading. Such Selling Shareholder confirms
     as accurate the number of Common Shares set forth opposite such Selling
     Shareholder's name in the Prospectus under the caption "Principal and
     Selling Shareholders" (both prior to and after giving effect to the sale of
     the Shares).

          (ix) No Price Stabilization or Manipulation. Such Selling Shareholder
     has not taken and will not take, directly or indirectly, any action
     designed to or that might be reasonably expected to cause or result in
     stabilization or manipulation of the price of the Common Shares to
     facilitate the sale or resale of the Shares.

          (x) Confirmation of Company Representations and Warranties. Such
     Selling Shareholder has no reason to believe that the representations and
     warranties of the Company contained in Section 1(A) hereof are not true and
     correct, is familiar with the Registration Statement and the Prospectus and
     has no knowledge of any material fact,

                                       11


     condition or information not disclosed in the Registration Statement or the
     Prospectus which has had or may have a Material Adverse Change and is not
     prompted to sell shares of Shares by any information concerning the Company
     which is not set forth in the Registration Statement and the Prospectus.

          (b) The Plan hereby represents, warrants and covenants to each
     Underwriter as follows:

          (i) Establishment and Qualification of Plan. The Plan has been duly
     adopted and established as a grantor trust in accordance with the laws of
     the State of Minnesota. The Plan is qualified under Section 401 of the Code
     and meets the requirements of an "employee stock ownership plan" within the
     meaning of Section 4975(e)(7) of the Code and 407(d)(6) of ERISA. The
     trustee under the Plan has all requisite trust powers to enter into the
     transaction contemplated by this Agreement.

          (ii) No Prohibited Transaction; No Fiduciary. The sale of the Shares
     to be sold by the Plan to the Underwriters will not, in whole or in part,
     constitute a prohibited transaction pursuant to Section 4975(c) of the Code
     or Section 406 of ERISA, and none of the Underwriters or any person or
     entity affiliated with them is a "fiduciary" (within the meaning of Section
     3(21) of ERISA) of the Plan or a "named fiduciary" (as such term is defined
     in Section 402(a) (2) of ERISA) of the Plan.

          Any certificate signed by or on behalf of any Selling Shareholder and
delivered to the Representatives or to counsel for the Underwriters in
connection with the consummation of the transactions contemplated hereby shall
be deemed to be a representation and warranty by such Selling Shareholder to
each Underwriter as to the matters covered thereby.

     Section 2.  Purchase, Sale and Delivery of the Shares.

          The Firm Shares.  Upon the terms herein set forth, (i) the Company
agrees to issue and sell to the several Underwriters an aggregate of 8,600,000
Firm Shares and (ii) the Selling Shareholders agree to sell to the several
Underwriters an aggregate of 4,400,000 Firm Shares, each Selling Shareholder
selling the number of Firm Shares set forth opposite such Selling Shareholder's
name on Schedule B.  On the basis of the representations, warranties and
agreements herein contained, and upon the terms but subject to the conditions
herein set forth, the Underwriters agree, severally and not jointly, to purchase
from the Company and the Selling Shareholders the respective number of Firm
Shares set forth opposite their names on Schedule A.  The purchase price per
Firm Share to be paid by the several Underwriters to the Company and the Selling
Shareholders shall be $_________ per share.

          The First Closing Date.  Delivery of certificates for the Firm Shares
to be purchased by the Underwriters and payment therefor shall be made at the
offices of Banc of America Securities LLC, 600 Montgomery Street, San Francisco,
California  (or such other place as may be agreed to by the Company and the
Representatives) at 6:00 a.m. San Francisco time, on _________ ____, 2000 or
such other time and date not later than 10:30 a.m. San Francisco time, on
__________ ___, 2000 as the Representatives shall designate by notice to the
Company and the Selling Shareholders (the time and date of such closing are
called the "First Closing

                                       12


Date"). The Company and the Selling Shareholders hereby acknowledge that
circumstances under which the Representatives may provide notice to postpone the
First Closing Date as originally scheduled include, but are in no way limited
to, any determination by the Company, the Selling Shareholders or the
Representatives to recirculate to the public copies of an amended or
supplemented Prospectus or a delay as contemplated by the provisions of Section
10.

          The Optional Shares; the Second Closing Date.  In addition, on the
basis of the representations, warranties and agreements herein contained, and
upon the terms but subject to the conditions herein set forth, the Company and
WCB hereby grant an option to the several Underwriters to purchase, severally
and not jointly, up to 1,290,000 Optional Shares from the Company and up to
660,000 Optional Shares from WCB at the purchase price per share to be paid by
the Underwriters for the Firm Shares.  The option granted hereunder is for use
by the Underwriters solely in covering any over-allotments in connection with
the sale and distribution of the Firm Shares.  The option granted hereunder may
be exercised at any time (but not more than once) upon notice by the
Representatives to the Company and WCB, which notice may be given at any time
within 30 days from the date of this Agreement.  Such notice shall set forth (i)
the number of Optional Shares from each of the Company and WCB as to which the
Underwriters are exercising the option, (ii) the names and denominations in
which the certificates for the Optional Shares are to be registered and (iii)
the time, date and place at which such certificates will be delivered (which
time and date may be simultaneous with, but not earlier than, the First Closing
Date; and in such case the term "First Closing Date" shall refer to the time and
date of delivery of certificates for the Firm Shares and the Optional Shares).
Such time and date of delivery, if subsequent to the First Closing Date, is
called the "Second Closing Date" and shall be determined by the Representatives
and shall not be earlier than three nor later than five full business days after
delivery of such notice of exercise.  If any Optional Shares are to be
purchased, (a) each Underwriter agrees, severally and not jointly, to purchase
the number of Optional Shares (subject to such adjustments to eliminate
fractional shares as the Representatives may determine) that bears the same
proportion to the total number of Optional Shares to be purchased as the number
of Firm Shares set forth on Schedule A opposite the name of such Underwriter
bears to the total number of Firm Shares and (b)  the Company and WCB agree to
sell the total number of Optional Shares.  The Representatives may cancel the
option at any time prior to its expiration by giving written notice of such
cancellation to the Company and WCB.

          Public Offering of the Shares.  The Representatives hereby advise the
Company and the Selling Shareholders that the Underwriters intend to offer for
sale to the public, as described in the Prospectus, their respective portions of
the Shares as soon after this Agreement has been executed and the Registration
Statement has been declared effective as the Representatives, in its sole
judgment, has determined is advisable and practicable.  The Company and the
Underwriters hereby agree that up to ______ Firm Shares to be purchased to by
the Underwriters (the "Directed Shares") shall be reserved for sale by the
Underwriters to [persons having business relationships with the Company] (the
"Directed Share Purchasers"), as part of the distribution of the Shares by the
Underwriters subject to the terms of this Agreement, the applicable rules,
regulations and interpretations of the National Association of Securities
Dealers, Inc., and all other applicable laws, rules and regulations; provided,
however, that under no circumstances will the Representatives or any other
Underwriter be liable to the Company or to any of the Directed Share Purchasers
for any action taken or omitted in good faith in connection with the
transactions effected with regard to the Directed Share Purchasers.  Any

                                       13


Directed Shares not orally confirmed for purchase by Directed Share Purchasers
by the end of the business day on which this Agreement is executed will be
offered to the public by the Underwriters as part of the offering contemplated
hereby.

          Payment for the Shares.  Payment for the Shares to be sold by the
Company shall be made at the First Closing Date (and, if applicable, at the
Second Closing Date) by wire transfer of immediately available funds to the
order of the Company.  Payment for the Shares to be sold by WCB shall be made at
the First Closing Date (and, if applicable, at the Second Closing Date) by wire
transfer of immediately available funds to the order of WCB.

          It is understood that the Representatives have been authorized, for
their own accounts and the accounts of the several Underwriters, to accept
delivery of and receipt for, and make payment of the purchase price for, the
Firm Shares and any Optional Shares the Underwriters have agreed to purchase.
Each of Banc of America Securities LLC, Donaldson, Lufkin & Jenrette Securities
Corporation, Salomon Smith Barney Inc. and U.S. Bancorp Piper Jaffray Inc.,
individually and not as Representatives of the Underwriters, may (but shall not
be obligated to) make payment for any Shares to be purchased by any Underwriter
whose funds shall not have been received by the Representatives by the First
Closing Date or the Second Closing Date, as the case may be, for the account of
such Underwriter, but any such payment shall not relieve such Underwriter from
any of its obligations under this Agreement.

          Each Selling Shareholder hereby agrees that (i) it will pay all stock
transfer taxes, stamp duties and other similar taxes, if any, payable upon the
sale or delivery of the Shares to be sold by such Selling Shareholder to the
several Underwriters, or otherwise in connection with the performance of such
Selling Shareholder's obligations hereunder and (ii) the Underwriters are
authorized to deduct from such payment any such amounts from the proceeds to
such Selling Shareholder hereunder and to hold such amounts for the account of
such Selling Shareholder.

          Delivery of the Shares.  The Company and the Selling Shareholders
shall deliver, or cause to be delivered, to the Representatives for the accounts
of the several Underwriters certificates, if any, for the Firm Shares to be sold
by them at the First Closing Date, against the irrevocable release of a wire
transfer of immediately available funds for the amount of the purchase price
therefor.  The Company and WCB shall also deliver, or cause to be delivered, to
the Representatives for the accounts of the several Underwriters, certificates,
if any, for the Optional Shares the Underwriters have agreed to purchase from
them at the First Closing Date or the Second Closing Date, as the case may be,
against the irrevocable release of a wire transfer of immediately available
funds for the amount of the purchase price therefor.  The certificates for the
Shares shall be in definitive form and registered in such names and
denominations as the Representatives shall have requested at least two full
business days prior to the First Closing Date (or the Second Closing Date, as
the case may be) and shall be made available for inspection on the business day
preceding the First Closing Date (or the Second Closing Date, as the case may
be) at a location in New York City as the Representatives may designate.  Time
shall be of the essence, and delivery at the time and place specified in this
Agreement is a further condition to the obligations of the Underwriters.

          Delivery of Prospectus to the Underwriters.  Not later than 12:00 p.m.
on the second business day following the date the Shares are first released by
the Underwriters for sale

                                       14


to the public, the Company shall deliver or cause to be delivered, copies of the
Prospectus in such quantities and at such places as the Representatives shall
request.

     Section 3.  Additional Covenants.

     A. Covenants of the Company. The Company further covenants and agrees with
each Underwriter as follows:

          (a) Representatives' Review of Proposed Amendments and Supplements.
     During such period beginning on the date hereof and ending on the later of
     the First Closing Date or such date, as in the opinion of counsel for the
     Underwriters, the Prospectus is no longer required by law to be delivered
     in connection with sales by an Underwriter or dealer (the "Prospectus
     Delivery Period"), prior to amending or supplementing the Registration
     Statement (including any registration statement filed under Rule 462(b)
     under the Securities Act) or the Prospectus, the Company shall furnish to
     the Representatives for review a copy of each such proposed amendment or
     supplement, and the Company shall not file any such proposed amendment or
     supplement to which the Representatives reasonably object.

          (b) Securities Act Compliance. After the date of this Agreement, the
     Company shall promptly advise the Representatives in writing (i) of the
     receipt of any comments of, or requests for additional or supplemental
     information from, the Commission, (ii) of the time and date of any filing
     of any post-effective amendment to the Registration Statement or any
     amendment or supplement to any preliminary prospectus or the Prospectus,
     (iii) of the time and date that any post-effective amendment to the
     Registration Statement becomes effective and (iv) of the issuance by the
     Commission of any stop order suspending the effectiveness of the
     Registration Statement or any post-effective amendment thereto or of any
     order preventing or suspending the use of any preliminary prospectus or the
     Prospectus, or of any proceedings to remove, suspend or terminate from
     listing or quotation the Common Shares from any securities exchange upon
     which it is listed for trading or included or designated for quotation, or
     of the threatening or initiation of any proceedings for any of such
     purposes. If the Commission shall enter any such stop order at any time,
     the Company will use its best efforts to obtain the lifting of such order
     at the earliest possible moment. Additionally, the Company agrees that it
     shall comply with the provisions of Rules 424(b), 430A and 434, as
     applicable, under the Securities Act and will use its reasonable efforts to
     confirm that any filings made by the Company under such Rule 424(b) were
     received in a timely manner by the Commission.

          (c) Amendments and Supplements to the Prospectus and Other Securities
     Act Matters. If, during the Prospectus Delivery Period, any event shall
     occur or condition exist as a result of which it is necessary to amend or
     supplement the Prospectus in order to make the statements therein, in the
     light of the circumstances when the Prospectus is delivered to a purchaser,
     not misleading, or if in the opinion of the Representatives or counsel for
     the Underwriters it is otherwise necessary to amend or supplement the
     Prospectus to comply with law, the Company agrees to promptly prepare
     (subject to Section 3(A)(a) hereof), file with the Commission and furnish
     at its own expense to the

                                       15


     Underwriters and to dealers, amendments or supplements to the Prospectus so
     that the statements in the Prospectus as so amended or supplemented will
     not, in the light of the circumstances when the Prospectus is delivered to
     a purchaser, be misleading or so that the Prospectus, as amended or
     supplemented, will comply with law.

          (d) Copies of any Amendments and Supplements to the Prospectus. The
     Company agrees to furnish the Representatives, without charge, during the
     Prospectus Delivery Period, as many copies of the Prospectus and any
     amendments and supplements thereto as the Representatives may request.

          (e) Blue Sky Compliance. The Company shall cooperate with the
     Representatives and counsel for the Underwriters to qualify or register the
     Shares for sale under (or obtain exemptions from the application of) the
     state securities or blue sky laws or Canadian provincial securities laws of
     those jurisdictions reasonably designated by the Representatives, shall
     comply with such laws and shall continue such qualifications, registrations
     and exemptions in effect so long as required for the distribution of the
     Common Shares. The Company shall not be required to qualify as a foreign
     corporation or to take any action that would subject it to general service
     of process in any such jurisdiction where it is not presently qualified or
     where it would be subject to taxation as a foreign corporation. The Company
     will advise the Representatives promptly of the suspension of the
     qualification or registration of (or any such exemption relating to) the
     Shares for offering, sale or trading in any jurisdiction or any initiation
     or threat of any proceeding for any such purpose, and in the event of the
     issuance of any order suspending such qualification, registration or
     exemption, the Company shall use its best efforts to obtain the withdrawal
     thereof at the earliest possible moment.

          (f) Use of Proceeds. The Company shall apply the net proceeds from the
     sale of the Shares sold by it in the manner described under the caption
     "Use of Proceeds" in the Prospectus.

          (g) Transfer Agent. The Company shall engage and maintain, at its
     expense, a registrar and transfer agent for the Common Shares.

          (h) Earnings Statement. As soon as practicable, the Company will make
     generally available to its security holders and to the Representatives an
     earnings statement (which need not be audited) covering the twelve-month
     period ending ____________ ___, 2001 that satisfies the provisions of
     Section 11(a) of the Securities Act.

          (i) Periodic Reporting Obligations. During the Prospectus Delivery
     Period the Company shall file, on a timely basis, with the Commission and
     the Nasdaq National Market all reports and documents required to be filed
     under the Exchange Act. Additionally, the Company shall report the use of
     proceeds from the issuance of the Common Shares as may be required under
     Rule 463 under the Securities Act.

          (j) Agreement Not To Offer or Sell Additional Securities During the
     period of 180 days following the date of the Prospectus, the Company will
     not, without the prior

                                       16


     written consent of Banc of America Securities LLC (which consent may be
     withheld at the sole discretion of Banc of America Securities LLC),
     directly or indirectly, sell, offer, contract or grant any option to sell
     (including without limitation any short sale), pledge, transfer or
     establish an open "put equivalent position" within the meaning of Rule 16a-
     1(h) under the Securities Exchange Act of 1934, as amended, (the "Exchange
     Act"), or otherwise dispose of or transfer, or announce the offering of, or
     file any registration statement under the Securities Act in respect of, any
     Common Shares, options or warrants to acquire Common Shares or securities
     exchangeable or exercisable for or convertible into Common Shares (other
     than as contemplated by this Agreement with respect to the Shares);
     provided, however, that the Company may issue Common Shares or options to
     purchase its Common Shares, upon exercise of options, pursuant to any stock
     option, stock bonus or other stock plan or arrangement described in the
     Prospectus, but only if the holders of such shares, options, or shares
     issued upon exercise of such options, agree in writing not to sell, offer,
     dispose of or otherwise transfer any such shares or options during such 180
     day period without the prior written consent of Banc of America Securities
     LLC (which consent may be withheld at the sole discretion of Banc of
     America Securities LLC).

          (k) Future Reports to the Representatives. During the period
     commencing on the date hereof and continuing for five years hereafter, the
     Company will furnish to the Representatives at c/o Banc of America
     Securities LLC, 600 Montgomery Street, San Francisco, CA 94111 (i) as soon
     as practicable after the end of each fiscal year, copies of the Annual
     Report of the Company containing the balance sheet of the Company as of the
     close of such fiscal year and statements of income, shareholders' equity
     and cash flows for the year then ended and the opinion thereon of the
     Company's independent public or certified public accountants; (ii) as soon
     as practicable after the filing thereof, copies of each proxy statement,
     Annual Report on Form 10-K, Quarterly Report on Form 10-Q, Current Report
     on Form 8-K or other report filed by the Company with the Commission, the
     NASD or any securities exchange; and (iii) as soon as available, copies of
     any report or communication of the Company mailed generally to holders of
     its capital stock.

          (l) Registration Statement on Form S-8. During the period of 180 days
     following the date of the Prospectus, the Company will not, without the
     prior written consent of Banc of America Securities LLC (which consent may
     be withheld at the sole discretion of Banc of America Securities LLC), file
     a registration statement on Form S-8 to register the Company's common
     shares reserved for issuance or issued under any of the Company's option or
     stock plans.

     B. Covenants of the Selling Shareholders. Each Selling Shareholder further
covenants and agrees with each Underwriter:

          (a) Agreement Not to Offer or Sell Additional Securities. Such Selling
     Shareholder will not, without the prior written consent of Banc of America
     Securities LLC (which consent may be withheld in its sole discretion),
     directly or indirectly, sell, offer, contract or grant any option to sell
     (including without limitation any short sale), pledge, transfer, establish
     an open "put equivalent position" within the meaning of Rule 16a-1(h) under
     the Exchange Act, or otherwise dispose of any Common Shares, options

                                       17


     or warrants to acquire Common Shares, or securities exchangeable or
     exercisable for or convertible into Common Shares currently or hereafter
     owned either of record or beneficially (as defined in Rule 13d-3 under the
     Exchange Act) by the undersigned, or publicly announce the undersigned's
     intention to do any of the foregoing, for a period commencing on the date
     hereof and continuing through the close of trading on the date 180 days
     after the date of the Prospectus; provided, however, that the foregoing
     shall not apply to any Common Shares which are required in accordance with
     the terms of the Plan and Section 401(a)(9) of the Code to be distributed
     from the Plan to employees, their heirs or beneficiaries on account of
     death, Disability (as defined in the Plan) or retirement from the Company
     after age 65.

          (b) Delivery of Forms W-8 and W-9 . To deliver to the Representatives
     prior to the First Closing Date a properly completed and executed United
     States Treasury Department Form W-8 (if the Selling Shareholder is a non-
     United States person) or Form W-9 (if the Selling Shareholder is a United
     States Person).

          Banc of America Securities LLC, on behalf of the several Underwriters,
may, in its sole discretion, waive in writing the performance by the Company or
the Selling Shareholder of any one or more of the foregoing covenants or extend
the time for their performance.

     Section 4. Payment of Expenses. The Company agrees to pay all costs, fees
and expenses incurred in connection with the performance of its obligations
hereunder and in connection with the transactions contemplated hereby, including
without limitation (i) all expenses incident to the issuance and delivery of the
Shares (including all printing and engraving costs), (ii) all fees and expenses
of the registrar and transfer agent of the Shares, (iii) all necessary issue,
transfer and other stamp taxes in connection with the issuance and sale of the
Shares to the Underwriters, (iv) all fees and expenses of the Company's counsel,
independent public or certified public accountants and other advisors, (v) all
costs and expenses incurred in connection with the preparation, printing,
filing, shipping and distribution of the Registration Statement (including
financial statements, exhibits, schedules, consents and certificates of
experts), each preliminary prospectus and the Prospectus, and all amendments and
supplements thereto, and this Agreement, (vi) all filing fees, attorneys' fees
and expenses incurred by the Company or the Underwriters in connection with
qualifying or registering (or obtaining exemptions from the qualification or
registration of) all or any part of the Shares for offer and sale under the
state securities or blue sky laws or the provincial securities laws of Canada,
and, if requested by the Representatives, preparing and printing a "Blue Sky
Survey" or memorandum, and any supplements thereto, advising the Underwriters of
such qualifications, registrations and exemptions, (vii) the filing fees
incident to, and the reasonable fees and expenses of counsel for the
Underwriters in connection with, the NASD's review and approval of the
Underwriters' participation in the offering and distribution of the Shares,
(viii) the fees and expenses associated with listing the Common Shares on the
Nasdaq National Market, and (ix) all other fees, costs and expenses referred to
in Item 13 of Part II of the Registration Statement. Except as provided in this
Section 4, Section 6, Section 8 and Section 9 hereof, the Underwriters shall pay
their own expenses, including the fees and disbursements of their counsel.

          The Selling Shareholders further agree with each Underwriter to pay
(directly or by reimbursement) all fees and expenses incident to the performance
of their obligations under

                                       18


this Agreement, including but not limited to (i) fees and expenses of counsel
and other advisors for such Selling Shareholders and (ii) taxes incident to the
sale and delivery of the Shares to be sold by such Selling Shareholders to the
Underwriters hereunder (which taxes, if any, may be deducted by the Underwriters
under the provisions of Section 2 of this Agreement).

          This Section 4 shall not affect or modify any separate, valid
agreement relating to the allocation of payment of expenses between the Company,
on the one hand, and the Selling Shareholders, on the other hand.

     Section 5. Conditions of the Obligations of the Underwriters. The
obligations of the several Underwriters to purchase and pay for the Shares as
provided herein on the First Closing Date and, with respect to the Optional
Shares, the Second Closing Date, shall be subject to the accuracy of the
representations and warranties on the part of the Company and the Selling
Shareholders set forth in Sections 1(A) and 1(B) hereof as of the date hereof
and as of the First Closing Date as though then made and, with respect to the
Optional Shares, as of the Second Closing Date as though then made, to the
timely performance by the Company and the Selling Shareholders of its covenants
and other obligations hereunder, and to each of the following additional
conditions:

          (a) Accountants' Comfort Letter. On the date hereof, the
     Representatives and the Selling Shareholders shall have received from KPMG
     LLP, independent public or certified public accountants for the Company, a
     letter dated the date hereof addressed to the Underwriters, in form and
     substance satisfactory to the Representatives, containing statements and
     information of the type ordinarily included in accountant's "comfort
     letters" to underwriters, delivered according to Statement of Auditing
     Standards No. 72 (or any successor bulletin), with respect to the audited
     and unaudited financial statements and certain financial information
     contained in the Registration Statement and the Prospectus (and the
     Representatives shall have received an additional three conformed copies of
     such accountants' letter).

          (b) Compliance with Registration Requirements; No Stop Order; No
     Objection from NASD. For the period from and after effectiveness of this
     Agreement and prior to the First Closing Date and, with respect to the
     Optional Shares, the Second Closing Date:

               (i) the Company shall have filed the Prospectus with the
     Commission (including the information required by Rule 430A under the
     Securities Act) in the manner and within the time period required by Rule
     424(b) under the Securities Act; or the Company shall have filed a post-
     effective amendment to the Registration Statement containing the
     information required by such Rule 430A, and such post-effective amendment
     shall have become effective; or, if the Company elected to rely upon Rule
     434 under the Securities Act and obtained the Representatives' consent
     thereto, the Company shall have filed a Term Sheet with the Commission in
     the manner and within the time period required by such Rule 424(b);

               (ii) no stop order suspending the effectiveness of the
     Registration Statement, any Rule 462(b) Registration Statement, or any
     post-effective amendment to

                                       19


     the Registration Statement, shall be in effect and no proceedings for such
     purpose shall have been instituted or threatened by the Commission; and

               (iii)  the NASD shall have raised no objection to the fairness
     and reasonableness of the underwriting terms and arrangements.

          (c) No Material Adverse Change or Ratings Agency Change. For the
     period from and after the date of this Agreement and prior to the First
     Closing Date and, with respect to the Optional Shares, the Second Closing
     Date:

               (i) in the judgment of the Representatives there shall not have
     occurred any Material Adverse Change; and

               (ii) there shall not have occurred any downgrading, nor shall any
     notice have been given of any intended or potential downgrading or of any
     review for a possible change that does not indicate the direction of the
     possible change, in the rating accorded any securities of the Company or
     any of its subsidiaries by any "nationally recognized statistical rating
     organization" as such term is defined for purposes of Rule 436(g)(2) under
     the Securities Act.

          (d) Opinion of Counsel for the Company. On each of the First Closing
     Date and the Second Closing Date the Representatives shall have received
     the favorable opinion of Dorsey & Whitney, LLP, special counsel for the
     Company, dated as of such Closing Date, the form of which is attached as
     Exhibit A (and the Representatives shall have received an additional two
     conformed copies of such counsels' legal opinion).

          (e) Opinion of Counsel for the Underwriters. On each of the First
     Closing Date and the Second Closing Date the Representatives shall have
     received the favorable opinion of Latham & Watkins, special counsel for the
     Underwriters, dated as of such Closing Date, in form and substance
     satisfactory to the Representatives (and the Representatives shall have
     received an additional two conformed copies of such counsel's legal
     opinion).

          (f) Officers' Certificate. On each of the First Closing Date and the
     Second Closing Date the Representatives shall have received a written
     certificate executed by the Chairman of the Board, Chief Executive Officer
     or President of the Company and the Chief Financial Officer or Chief
     Accounting Officer of the Company, dated as of such Closing Date, to the
     effect set forth in subsections (b)(ii) and (c)(ii) of this Section 5, and
     further to the effect that:

               (i) for the period from and after the date of this Agreement and
     prior to such Closing Date, there has not occurred any Material Adverse
     Change;

               (ii) the representations, warranties and covenants of the Company
     set forth in Section 1(A) of this Agreement are true and correct with the
     same force and effect as though expressly made on and as of such Closing
     Date; and

                                       20


               (iii)  the Company has complied with all the agreements hereunder
     and satisfied all the conditions on its part to be performed or satisfied
     hereunder at or prior to such Closing Date.

          (g) Bring-down Comfort Letter. On each of the First Closing Date and
     the Second Closing Date the Representatives shall have received from KPMG
     LLP, independent public or certified public accountants for the Company, a
     letter dated such date, in form and substance satisfactory to the
     Representatives, to the effect that they reaffirm the statements made in
     the letter furnished by them pursuant to subsection (a) of this Section 5,
     except that the specified date referred to therein for the carrying out of
     procedures shall be no more than three business days prior to the First
     Closing Date or Second Closing Date, as the case may be (and the
     Representatives shall have received an additional three conformed copies of
     such accountants' letter for each of the several Underwriters).

          (h) Opinion of Counsel for the Selling Shareholders. On each of the
     First Closing Date and the Second Closing Date, the Representatives shall
     have received the favorable opinion of counsel for the Selling
     Shareholders, dated as of the First Closing Date, the form of which is
     attached as Exhibit B (and the Representatives shall have received an
     additional three conformed copies of such counsel's legal opinion for each
     of the several Underwriters).

          (i) Selling Shareholders' Certificate. On each of the First Closing
     Date and the Second Closing Date the Representatives shall receive a
     written certificate executed by each Selling Shareholder, dated as of such
     Closing Date, to the effect that:

               (i) the representations, warranties and covenants of such Selling
     Shareholder set forth in Section 1(B) of this Agreement are true and
     correct with the same force and effect as though expressly made by such
     Selling Shareholder on and as of such Closing Date; and

               (ii) such Selling Shareholder has complied with all the
     agreements and satisfied all the conditions on its part to be performed or
     satisfied at or prior to such Closing Date.

          (j) Selling Shareholders' Documents. On the date hereof, the Company
     and the Selling Shareholders shall have furnished for review by the
     Representatives copies of the Custody Agreements executed by each of the
     Selling Shareholders and such further information, certificates and
     documents as the Representatives may reasonably request.

          (k) Lock-Up Agreement from Certain Persons. On the date hereof, the
     Company shall have furnished to the Representatives an agreement in the
     form of Exhibit C hereto from each of the persons set forth on Schedule C,
     and such agreement shall be in full force and effect on each of the First
     Closing Date and the Second Closing Date.

          (l) Additional Documents. On or before each of the First Closing Date
     and the Second Closing Date, the Representatives and counsel for the
     Underwriters shall have

                                       21


     received such information, documents and opinions as they may reasonably
     require for the purposes of enabling them to pass upon the issuance and
     sale of the Shares as contemplated herein, or in order to evidence the
     accuracy of any of the representations and warranties, or the satisfaction
     of any of the conditions or agreements, herein contained.

          If any condition specified in this Section 5 is not satisfied when and
as required to be satisfied, this Agreement may be terminated by the
Representatives by notice to the Company and the Selling Shareholders at any
time on or prior to the First Closing Date and, with respect to the Optional
Shares, at any time prior to the Second Closing Date, which termination shall be
without liability on the part of any party to any other party, except that
Section 4, Section 6, Section 8 and Section  9 shall at all times be effective
and shall survive such termination.

     Section 6. Reimbursement of Underwriters' Expenses. If this Agreement is
terminated by the Representatives pursuant to Section 5, Section 7, Section 10
or Section 11 or Section 17, or if the sale to the Underwriters of the Shares on
the First Closing Date is not consummated because of any refusal, inability or
failure on the part of the Company or the Selling Shareholders to perform any
agreement herein or to comply with any provision hereof, the Company agrees to
reimburse the Representatives and the other Underwriters (or such Underwriters
as have terminated this Agreement with respect to themselves), severally, upon
demand for all out-of-pocket expenses that shall have been reasonably incurred
by the Representatives and the Underwriters in connection with the proposed
purchase and the offering and sale of the Shares, including but not limited to
fees and disbursements of counsel, printing expenses, travel expenses, postage,
facsimile and telephone charges.


     Section 7.  Effectiveness of this Agreement.

          This Agreement shall not become effective until the later of (i) the
execution of this Agreement by the parties hereto and (ii) notification by the
Commission to the Company and the Representatives of the effectiveness of the
Registration Statement under the Securities Act.

          Prior to such effectiveness, this Agreement may be terminated by any
party by notice to each of the other parties hereto, and any such termination
shall be without liability on the part of (a) the Company or the Selling
Shareholders to any Underwriter, except that the Company and the Selling
Shareholders shall be obligated to reimburse the expenses of the Representatives
and the Underwriters pursuant to Sections 4 and 6 hereof, (b) of any Underwriter
to the Company or the Selling Shareholders, or (c) of any party hereto to any
other party except that the provisions of Section 8 and Section 9 shall at all
times be effective and shall survive such termination.

     Section 8.  Indemnification.

          (a) Indemnification of the Underwriters by the Company. The Company
     agrees to indemnify and hold harmless each Underwriter, its officers and
     employees, and each person, if any, who controls any Underwriter within the
     meaning of the Securities Act and the Exchange Act against any loss, claim,
     damage, liability or expense, as incurred, to which such Underwriter or
     such controlling person may become subject,

                                       22


     under the Securities Act, the Exchange Act or other federal or state
     statutory law or regulation, or at common law or otherwise (including in
     settlement of any litigation, if such settlement is effected with the
     written consent of the Company), insofar as such loss, claim, damage,
     liability or expense (or actions in respect thereof as contemplated below)
     arises out of or is based (i) upon any untrue statement or alleged untrue
     statement of a material fact contained in the Registration Statement, or
     any amendment thereto, including any information deemed to be a part
     thereof pursuant to Rule 430A or Rule 434 under the Securities Act, or the
     omission or alleged omission therefrom of a material fact required to be
     stated therein or necessary to make the statements therein not misleading;
     or (ii) upon any untrue statement or alleged untrue statement of a material
     fact contained in any preliminary prospectus or the Prospectus (or any
     amendment or supplement thereto), or the omission or alleged omission
     therefrom of a material fact necessary in order to make the statements
     therein, in the light of the circumstances under which they were made, not
     misleading; or (iii) in whole or in part upon any inaccuracy in the
     representations and warranties of the Company or the Selling Shareholders
     contained herein; or (iv) in whole or in part upon any failure of the
     Company or the Selling Shareholders to perform their respective obligations
     hereunder or under law; or (v) any act or failure to act or any alleged act
     or failure to act by any Underwriter in connection with, or relating in any
     manner to, the Common Shares or the offering contemplated hereby, and which
     is included as part of or referred to in any loss, claim, damage, liability
     or action arising out of or based upon any matter covered by clause (i) or
     (ii) above, provided that the Company shall not be liable under this clause
     (v) to the extent that a court of competent jurisdiction shall have
     determined by a final judgment that such loss, claim, damage, liability or
     action resulted directly from any such acts or failures to act undertaken
     or omitted to be taken by such Underwriter through its bad faith or willful
     misconduct; and to reimburse each Underwriter and each such controlling
     person for any and all expenses (including the fees and disbursements of
     counsel chosen by Banc of America Securities LLC) as such expenses are
     reasonably incurred by such Underwriter or such controlling person in
     connection with investigating, defending, settling, compromising or paying
     any such loss, claim, damage, liability, expense or action; provided,
     however, that the foregoing indemnity agreement shall not apply to any
     loss, claim, damage, liability or expense to the extent, but only to the
     extent, arising out of or based upon any untrue statement or alleged untrue
     statement or omission or alleged omission made in reliance upon and in
     conformity with written information furnished to the Company and the
     Selling Shareholders by the Representatives expressly for use in the
     Registration Statement, any preliminary prospectus or the Prospectus (or
     any amendment or supplement thereto); and provided, further, that with
     respect to any preliminary prospectus, the foregoing indemnity agreement
     shall not inure to the benefit of any Underwriter from whom the person
     asserting any loss, claim, damage, liability or expense purchased Shares,
     or any person controlling such Underwriter, if copies of the Prospectus
     were timely delivered to the Underwriter pursuant to Section 2 and a copy
     of the Prospectus (as then amended or supplemented if the Company shall
     have furnished any amendments or supplements thereto) was not sent or given
     by or on behalf of such Underwriter to such person, if required by law so
     to have been delivered, at or prior to the written confirmation of the sale
     of the Shares to such person, and if the Prospectus (as so amended or
     supplemented) would have cured the defect giving rise to such loss, claim,

                                       23


     damage, liability or expense. The indemnity agreement set forth in this
     Section 8(a) shall be in addition to any liabilities that the Company may
     otherwise have.

          (b) Indemnification of the Underwriters by the Selling Shareholders.
     Each of the Selling Shareholders (1) jointly and severally with respect to
     subsections (i), (ii), (iii)(x) and (v) below and (2) severally and not
     jointly with respect to subsections (iii)(y) and (iv) below, agrees to
     indemnify and hold harmless each Underwriter, its officers and employees,
     and each person, if any, who controls any Underwriter within the meaning of
     the Securities Act and the Exchange Act against any loss, claim, damage,
     liability or expense, as incurred, to which such Underwriter or such
     controlling person may become subject, under the Securities Act, the
     Exchange Act or other federal or state statutory law or regulation, or at
     common law or otherwise (including in settlement of any litigation, if such
     settlement is effected with the written consent of the Company), insofar as
     such loss, claim, damage, liability or expense (or actions in respect
     thereof as contemplated below) arises out of or is based (i) upon any
     untrue statement or alleged untrue statement of a material fact contained
     in the Registration Statement, or any amendment thereto, including any
     information deemed to be a part thereof pursuant to Rule 430A or Rule 434
     under the Securities Act, or the omission or alleged omission therefrom of
     a material fact required to be stated therein or necessary to make the
     statements therein not misleading; or (ii) upon any untrue statement or
     alleged untrue statement of a material fact contained in any preliminary
     prospectus or the Prospectus (or any amendment or supplement thereto), or
     the omission or alleged omission therefrom of a material fact necessary in
     order to make the statements therein, in the light of the circumstances
     under which they were made, not misleading; or (iii) in whole or in part
     upon any inaccuracy in the representations and warranties of (x) the
     Company (as if such Selling Shareholder had made such representations and
     warranties jointly and severally with the Company) or (y) such Selling
     Shareholder contained herein; or (iv) in whole or in part upon any failure
     of such Selling Shareholder to perform its obligations hereunder or under
     law; or (v) any act or failure to act or any alleged act or failure to act
     by any Underwriter in connection with, or relating in any manner to, the
     Common Shares or the offering contemplated hereby, and which is included as
     part of or referred to in any loss, claim, damage, liability or action
     arising out of or based upon any matter covered by clause (i) or (ii)
     above, provided that no Selling Shareholder shall be liable under this
     clause (v) to the extent that a court of competent jurisdiction shall have
     determined by a final judgment that such loss, claim, damage, liability or
     action resulted directly from any such acts or failures to act undertaken
     or omitted to be taken by such Underwriter through its bad faith or willful
     misconduct; and to reimburse each Underwriter and each such controlling
     person for any and all expenses (including the fees and disbursements of
     counsel chosen by Banc of America Securities LLC) as such expenses are
     reasonably incurred by such Underwriter or such controlling person in
     connection with investigating, defending, settling, compromising or paying
     any such loss, claim, damage, liability, expense or action; provided,
     however, that the foregoing indemnity agreement shall not apply to any
     loss, claim, damage, liability or expense to the extent, but only to the
     extent, arising out of or based upon any untrue statement or alleged untrue
     statement or omission or alleged omission made in reliance upon and in
     conformity with written information furnished to the Company and the
     Selling Shareholders by the Representatives expressly for use in the
     Registration Statement, any preliminary prospectus or the Prospectus (or
     any amendment
                                       24



     or supplement thereto); and provided, further, that with respect to any
     preliminary prospectus, the foregoing indemnity agreement shall not inure
     to the benefit of any Underwriter from whom the person asserting any loss,
     claim, damage, liability or expense purchased Shares, or any person
     controlling such Underwriter, if copies of the Prospectus were timely
     delivered to the Underwriter pursuant to Section 2 and a copy of the
     Prospectus (as then amended or supplemented if the Company shall have
     furnished any amendments or supplements thereto) was not sent or given by
     or on behalf of such Underwriter to such person, if required by law so to
     have been delivered, at or prior to the written confirmation of the sale of
     the Shares to such person, and if the Prospectus (as so amended or
     supplemented) would have cured the defect giving rise to such loss, claim,
     damage, liability or expense; and provided, further, that the liability of
     each Selling Shareholder under the foregoing indemnity agreement shall be
     limited (the "Indemnification Limitation") to an amount equal to the
     product of (i) the number of Shares sold by such Selling Shareholder
     multiplied by (ii) the per share "Offering Price" less the per share
     "Discounts and Commissions to Underwriters" set forth on the front cover
     page of the Prospectus. The indemnity agreement set forth in this Section
     8(a) shall be in addition to any liabilities that the Selling Shareholders
     may otherwise have. The indemnification provided by each Selling
     Shareholder pursuant to this Section 8(b) shall be a primary obligation of
     such Selling Shareholder and not in the nature of a guarantee or other
     secondary obligation.

          (c) The liability of the Company under Section 8(a) and the liability
     of the Selling Shareholders under Section 8(b) shall be proportional, as
     among the Company and the Selling Shareholders, to the number of Shares
     sold by the Company or such Selling Shareholder, as applicable, to the
     aggregate number of Shares sold by the Company and the Selling
     Shareholders; provided, however, that (i) the liability of the Selling
     Shareholders under Section 8(b) shall be increased, proportionately to the
     number of Shares sold by each Selling Shareholder, to the extent that the
     Company does not pay its pro rata share of any loss, claim, damage,
     liability or expense for which it is liable under Section 8(a), subject to
     the Indemnification Limitation and (ii) no Selling Shareholder shall be
     liable for the breach of any representation or warranty of any other
     Selling Shareholder.

          (d) Indemnification of the Company, its Directors and Officers and the
     Selling Shareholders. Each Underwriter agrees, severally and not jointly,
     to indemnify and hold harmless the Company, each of its directors, each of
     its officers who signed the Registration Statement, the Selling
     Shareholders and each person, if any, who controls the Company or any
     Selling Shareholder within the meaning of the Securities Act or the
     Exchange Act, against any loss, claim, damage, liability or expense, as
     incurred, to which the Company, or any such director, officer, Selling
     Shareholder or controlling person may become subject, under the Securities
     Act, the Exchange Act, or other federal or state statutory law or
     regulation, or at common law or otherwise (including in settlement of any
     litigation, if such settlement is effected with the written consent of such
     Underwriter), insofar as such loss, claim, damage, liability or expense (or
     actions in respect thereof as contemplated below) arises out of or is based
     upon any untrue or alleged untrue statement of a material fact contained in
     the Registration Statement, any preliminary prospectus or the Prospectus
     (or any amendment or supplement thereto), or

                                       25


     arises out of or is based upon the omission or alleged omission to state
     therein a material fact required to be stated therein or necessary to make
     the statements therein not misleading, in each case to the extent, but only
     to the extent, that such untrue statement or alleged untrue statement or
     omission or alleged omission was made in the Registration Statement, any
     preliminary prospectus, the Prospectus (or any amendment or supplement
     thereto), in reliance upon and in conformity with written information
     furnished to the Company and the Selling Shareholders by the
     Representatives expressly for use therein; and to reimburse the Company, or
     any such director, officer, Selling Shareholder or controlling person for
     any legal and other expense reasonably incurred by the Company, or any such
     director, officer, Selling Shareholder or controlling person in connection
     with investigating, defending, settling, compromising or paying any such
     loss, claim, damage, liability, expense or action. [Each of] The Company
     and each of the Selling Shareholders, hereby acknowledges that the only
     information that the Underwriters have furnished to the Company and the
     Selling Shareholders expressly for use in the Registration Statement, any
     preliminary prospectus or the Prospectus (or any amendment or supplement
     thereto) are the statements set forth in the table in the first paragraph
     and the second paragraph under the caption "Underwriting" in the
     Prospectus; and the Underwriters confirm that such statements are correct.
     The indemnity agreement set forth in this Section 8(d) shall be in addition
     to any liabilities that each Underwriter may otherwise have.

          (e) Notifications and Other Indemnification Procedures. Promptly after
     receipt by an indemnified party under this Section 8 of notice of the
     commencement of any action, such indemnified party will, if a claim in
     respect thereof is to be made against an indemnifying party under this
     Section 8, notify the indemnifying party in writing of the commencement
     thereof, but the omission so to notify the indemnifying party will not
     relieve it from any liability which it may have to any indemnified party
     for contribution or otherwise than under the indemnity agreement contained
     in this Section 8 or to the extent it is not prejudiced as a proximate
     result of such failure. In case any such action is brought against any
     indemnified party and such indemnified party seeks or intends to seek
     indemnity from an indemnifying party, the indemnifying party will be
     entitled to participate in, and, to the extent that it shall elect, jointly
     with all other indemnifying parties similarly notified, by written notice
     delivered to the indemnified party promptly after receiving the aforesaid
     notice from such indemnified party, to assume the defense thereof with
     counsel reasonably satisfactory to such indemnified party; provided,
     however, if the defendants in any such action include both the indemnified
     party and the indemnifying party and the indemnified party shall have
     reasonably concluded that a conflict may arise between the positions of the
     indemnifying party and the indemnified party in conducting the defense of
     any such action or that there may be legal defenses available to it and/or
     other indemnified parties which are different from or additional to those
     available to the indemnifying party, the indemnified party or parties shall
     have the right to select one separate counsel to assume such legal defenses
     and to otherwise participate in the defense of such action on behalf of
     such indemnified party or parties as a group. Upon receipt of notice from
     the indemnifying party to such indemnified party of such indemnifying
     party's election so to assume the defense of such action and approval by
     the indemnified party of counsel, the indemnifying party will not be liable
     to such indemnified party under this Section 8 for any legal or other
     expenses subsequently

                                       26


     incurred by such indemnified party in connection with the defense thereof
     unless (i) the indemnified party shall have employed separate counsel in
     accordance with the proviso to the next preceding sentence (it being
     understood, however, that the indemnifying party shall not be liable for
     the expenses of more than one separate counsel (together with local
     counsel), approved by the indemnifying party (Banc of America Securities
     LLC in the case of Section 8(d) and Section 9 where the Underwriters are
     the indemnifying parties), representing the indemnified parties who are
     parties to such action) or (ii) the indemnifying party shall not have
     employed counsel satisfactory to the indemnified party to represent the
     indemnified party within a reasonable time after notice of commencement of
     the action, in each of which cases the fees and expenses of counsel shall
     be at the expense of the indemnifying party.

          (f) Settlements. The indemnifying party under this Section 8 shall not
     be liable for any settlement of any proceeding effected without its written
     consent, but if settled with such consent or if there be a final judgment
     for the plaintiff, the indemnifying party agrees to indemnify the
     indemnified party against any loss, claim, damage, liability or expense by
     reason of such settlement or judgment. Notwithstanding the foregoing
     sentence, if at any time an indemnified party shall have requested an
     indemnifying party to reimburse the indemnified party for fees and expenses
     of counsel as contemplated by Section 8(e) hereof, the indemnifying party
     agrees that it shall be liable for any settlement of any proceeding
     effected without its written consent if (i) such settlement is entered into
     more than 30 days after receipt by such indemnifying party of the aforesaid
     request and (ii) such indemnifying party shall not have reimbursed the
     indemnified party in accordance with such request prior to the date of such
     settlement. No indemnifying party shall, without the prior written consent
     of the indemnified party, effect any settlement, compromise or consent to
     the entry of judgment in any pending or threatened action, suit or
     proceeding in respect of which any indemnified party is or could have been
     a party and indemnity was or could have been sought hereunder by such
     indemnified party, unless such settlement, compromise or consent includes
     an unconditional release of such indemnified party from all liability on
     claims that are the subject matter of such action, suit or proceeding.

     Section 9.  Contribution.

          If the indemnification provided for in Section 8 is for any reason
held to be unavailable to or otherwise insufficient to hold harmless an
indemnified party in respect of any losses, claims, damages, liabilities or
expenses referred to therein, then each indemnifying party shall contribute to
the aggregate amount paid or payable by such indemnified party, as incurred, as
a result of any losses, claims, damages, liabilities or expenses referred to
therein (i) in such proportion as is appropriate to reflect the relative
benefits received by the Company and the Selling Shareholders, on the one hand,
and the Underwriters, on the other hand, from the offering of the Shares
pursuant to this Agreement or (ii) if the allocation provided by clause (i)
above is not permitted by applicable law, in such proportion as is appropriate
to reflect not only the relative benefits referred to in clause (i) above but
also the relative fault of the Company and the Selling Shareholders, on the one
hand, and the Underwriters, on the other hand, in connection with the statements
or omissions or inaccuracies in the representations and warranties herein which
resulted in such losses, claims, damages, liabilities or expenses, as well as
any other

                                       27


relevant equitable considerations. The relative benefits received by the Company
and the Selling Shareholders, on the one hand, and the Underwriters, on the
other hand, in connection with the offering of the Shares pursuant to this
Agreement shall be deemed to be in the same respective proportions as the total
net proceeds from the offering of the Shares pursuant to this Agreement (before
deducting expenses) received by the Company and the Selling Shareholders, and
the total underwriting discount received by the Underwriters, in each case as
set forth on the front cover page of the Prospectus (or, if Rule 434 under the
Securities Act is used, the corresponding location on the Term Sheet) bear to
the aggregate initial public offering price of the Shares as set forth on such
cover. The relative fault of the Company and the Selling Shareholders, on the
one hand, and the Underwriters, on the other hand, shall be determined by
reference to, among other things, whether any such untrue or alleged untrue
statement of a material fact or omission or alleged omission to state a material
fact or any such inaccurate or alleged inaccurate representation or warranty
relates to information supplied by the Company or the Selling Shareholders, on
the one hand, or the Underwriters, on the other hand, and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission.

          The amount paid or payable by a party as a result of the losses,
claims, damages, liabilities and expenses referred to above shall be deemed to
include, subject to the limitations set forth in Section 8(e), any legal or
other fees or expenses reasonably incurred by such party in connection with
investigating or defending any action or claim.  The provisions set forth in
Section 8(e) with respect to notice of commencement of any action shall apply if
a claim for contribution is to be made under this Section 9; provided, however,
that no additional notice shall be required with respect to any action for which
notice has been given under Section 8(e) for purposes of indemnification.

          The Company, the Selling Shareholders and the Underwriters agree that
it would not be just and equitable if contribution pursuant to this Section 9
were determined by pro rata allocation (even if the Underwriters were treated as
one entity for such purpose) or by any other method of allocation which does not
take account of the equitable considerations referred to in this Section 9.

          Notwithstanding the provisions of this Section 9, no Underwriter shall
be required to contribute any amount in excess of the underwriting commissions
received by such Underwriter in connection with the Shares underwritten by it
and distributed to the public.  No person guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation.  The Underwriters' obligations to contribute pursuant to this
Section 9 are several, and not joint, in proportion to their respective
underwriting commitments as set forth opposite their names in Schedule A.  For
purposes of this Section 9, each officer and employee of an Underwriter and each
person, if any, who controls an Underwriter within the meaning of the Securities
Act and the Exchange Act shall have the same rights to contribution as such
Underwriter, and each director of the Company, each officer of the Company who
signed the Registration Statement, and each person, if any, who controls the
Company with the meaning of the Securities Act and the Exchange Act shall have
the same rights to contribution as the Company.

                                       28


          Notwithstanding the provisions of this Section 9, no Selling
Shareholder shall be required to contribute any amount in excess of the product
of (i) the number of Shares sold by such Selling Shareholder multiplied by (ii)
the per share "Offering Price" less the per share "Discounts and Commissions to
Underwriters" set forth on the front cover page of the Prospectus (the
"Contribution Limitation").

          The liability of the Company and the Selling Shareholders under this
Section 9 shall be proportional, as among the Company and the Selling
Shareholders, to the number of Shares sold by the Company or such Selling
Shareholder, as applicable, to the aggregate number of Shares sold by the
Company and the Selling Shareholders; provided, however, that (i) the liability
of the Selling Shareholders under this Section 9 shall be increased,
proportionately to the number of Shares sold by each Selling Shareholder, to the
extent that the Company does not pay its pro rata share of any loss, claim,
damage, liability or expense for which it is liable under this Section 9,
subject to the Contribution Limitation and (ii) no Selling Shareholder shall be
liable for the breach of any representation or warranty of any other Selling
Shareholder..

     Section 10. Default of One or More of the Several Underwriters. If, on the
First Closing Date or the Second Closing Date, as the case may be, any one or
more of the several Underwriters shall fail or refuse to purchase Shares that it
or they have agreed to purchase hereunder on such date, and the aggregate number
of Shares which such defaulting Underwriter or Underwriters agreed but failed or
refused to purchase does not exceed 10% of the aggregate number of the Shares to
be purchased on such date, the other Underwriters shall be obligated, severally,
in the proportions that the number of Firm Shares set forth opposite their
respective names on Schedule A bears to the aggregate number of Firm Common
Shares set forth opposite the names of all such non-defaulting Underwriters, or
in such other proportions as may be specified by the Representatives with the
consent of the non-defaulting Underwriters, to purchase the Shares which such
defaulting Underwriter or Underwriters agreed but failed or refused to purchase
on such date. If, on the First Closing Date or the Second Closing Date, as the
case may be, any one or more of the Underwriters shall fail or refuse to
purchase Shares and the aggregate number of Shares with respect to which such
default occurs exceeds 10% of the aggregate number of Shares to be purchased on
such date, and arrangements satisfactory to the Representatives and the Company
for the purchase of such Shares are not made within 48 hours after such default,
this Agreement shall terminate without liability of any party to any other party
except that the provisions of Section 4, Section 6, Section 8 and Section 9
shall at all times be effective and shall survive such termination. In any such
case either the Representatives or the Company shall have the right to postpone
the First Closing Date or the Second Closing Date, as the case may be, but in no
event for longer than seven days in order that the required changes, if any, to
the Registration Statement and the Prospectus or any other documents or
arrangements may be effected.

          As used in this Agreement, the term "Underwriter" shall be deemed to
include any person substituted for a defaulting Underwriter under this Section
10.  Any action taken under this Section 10 shall not relieve any defaulting
Underwriter from liability in respect of any default of such Underwriter under
this Agreement.

     Section 11. Termination of this Agreement. Prior to the First Closing Date
this Agreement may be terminated by the Representatives by notice given to the
Company and the

                                       29


Selling Shareholders if at any time (i) trading or quotation in any of the
Company's securities shall have been suspended or limited by the Commission or
by the Nasdaq National Market, or trading in securities generally on either the
Nasdaq Stock Market or the New York Stock Exchange shall have been suspended or
limited, or minimum or maximum prices shall have been generally established on
any of such stock exchanges by the Commission or the NASD; (ii) a general
banking moratorium shall have been declared by any of federal, New York,
California or Minnesota authorities; (iii) there shall have occurred any
outbreak or escalation of national or international hostilities or any crisis or
calamity, or any change in the United States or international financial markets,
or any substantial change or development involving a prospective substantial
change in United States' or international political, financial or economic
conditions, as in the judgment of the Representatives is material and adverse
and makes it impracticable to market the Shares in the manner and on the terms
described in the Prospectus or to enforce contracts for the sale of securities;
(iv) in the judgment of the Representatives there shall have occurred any
Material Adverse Change; or (v) the Company shall have sustained a loss by
strike, fire, flood, earthquake, accident or other calamity of such character as
in the judgment of the Representatives may interfere materially with the conduct
of the business and operations of the Company regardless of whether or not such
loss shall have been insured. Any termination pursuant to this Section 11 shall
be without liability on the part of (a) the Company or the Selling Shareholders
to any Underwriter, except that the Company and the Selling Shareholders shall
be obligated to reimburse the expenses of the Representatives and the
Underwriters pursuant to Sections 4 and 6 hereof, (b) any Underwriter to the
Company or the Selling Shareholders, or (c) of any party hereto to any other
party except that the provisions of Section 8 and Section 9 shall at all times
be effective and shall survive such termination.

     Section 12.  Representations and Indemnities to Survive Delivery.  The
respective indemnities, agreements, representations, warranties and other
statements of the Company, of its officers, of the Selling Shareholders and of
the several Underwriters set forth in or made pursuant to this Agreement will
remain in full force and effect, regardless of any investigation made by or on
behalf of any Underwriter or the Company or any of its or their partners,
officers or directors or any controlling person, or the Selling Shareholders, as
the case may be, and will survive delivery of and payment for the Shares sold
hereunder and any termination of this Agreement.

     Section 13. Notices. All communications hereunder shall be in writing and
shall be mailed, hand delivered or telecopied and confirmed to the parties
hereto as follows:

If to the Representatives:

     Banc of America Securities LLC
     600 Montgomery Street
     San Francisco, California 94111
     Facsimile:  415-913-5558
     Attention:  Steven P. Ortiz

                                       30


with a copy to:

     Banc of America Securities LLC
     600 Montgomery Street
     San Francisco, California  94111
     Facsimile:  (415) 913-5553
     Attention:  Jeffrey R. Lapic, Esq.

and with a copy to:

     Latham & Watkins
     233 S. Wacker Drive, Suite 5800
     Chicago, Illinois  60606
     Facsimile:  (312) 993-9767
     Attention:  Christopher D. Lueking, Esq.

If to the Company:

     Entegris, Inc.
     3500 Lyman Boulevard
     Chaska, Minnesota  55318
     Facsimile:  (952) 556-4480
     Attention:  James E. Dauwalter

with a copy to:

     Dorsey & Whitney, LLP
     220 South Sixth Street
     Minneapolis, Minnesota  55402-1498
     Facsimile:  (612) 340-2600
     Attention:  John T. Kramer, Esq.

with a copy to:

     Dunkley, Bennett & Christensen, P.A.
     701 Fourth Avenue South, Suite 700
     Minneapolis, Minnesota  55415
     Facsimile:  (612) 339-1290
     Attention:  Jay Bennett, Esq.

                                       31


If to the Plan:

     Entegris, Inc. Employee Stock Ownership Plan
     3500 Lyman Boulevard
     Chaska, Minnesota 55318
     Facsimile:  (952) 556-4480
     Attention:  ________________________

with a copy to:

     McDermott, Will & Emery
     227 West Monroe Street
     Chicago, Illinois  60606-5096
     Attention:  Helen H. Morrison, Esq.

If to WCB:

     WCB Holding LLC
     [Street address]
     [City, State, zip]
     Facsimile:
     Attention:

With a copy to:

     [to come]

Any party hereto may change the address for receipt of communications by giving
written notice to the others.

     Section 14.  Successors.  This Agreement will inure to the benefit of and
be binding upon the parties hereto, including any substitute Underwriters
pursuant to Section 10 hereof, and to the benefit of the employees, officers and
directors and controlling persons referred to in Section 8 and Section 9, and in
each case their respective successors, and no other person will have any right
or obligation hereunder.  The term "successors" shall not include any purchaser
of the Shares as such from any of the Underwriters merely by reason of such
purchase.

     Section 15.  Partial Unenforceability.  The invalidity or unenforceability
of any Section, paragraph or provision of this Agreement shall not affect the
validity or enforceability of any other Section, paragraph or provision hereof.
If any Section, paragraph or provision of this Agreement is for any reason
determined to be invalid or unenforceable, there shall be deemed to be made such
minor changes (and only such minor changes) as are necessary to make it valid
and enforceable.

     Section 16.  (a) Governing Law Provisions.  THIS AGREEMENT SHALL BE
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL

                                       32


LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED
IN SUCH STATE.

          (b) Consent to Jurisdiction. Any legal suit, action or proceeding
arising out of or based upon this Agreement or the transactions contemplated
hereby ("Related Proceedings") may be instituted in the federal courts of the
United States of America located in the Northern District of California or the
courts of the State of California located in the County of San Mateo
(collectively, the "Specified Courts"), and each party irrevocably submits to
the exclusive jurisdiction (except for proceedings instituted in regard to the
enforcement of a judgment of any such court (a "Related Judgment"), as to which
such jurisdiction is non-exclusive) of such courts in any such suit, action or
proceeding.  Service of any process, summons, notice or document by mail to such
party's address set forth above shall be effective service of process for any
suit, action or other proceeding brought in any such court.  The parties
irrevocably and unconditionally waive any objection to the laying of venue of
any suit, action or other proceeding in the Specified Courts and irrevocably and
unconditionally waive and agree not to plead or claim in any such court that any
such suit, action or other proceeding brought in any such court has been brought
in an inconvenient forum.

          (c) Waiver of Immunity.  With respect to any Related Proceeding, each
party irrevocably waives, to the fullest extent permitted by applicable law, all
immunity (whether on the basis of sovereignty or otherwise) from jurisdiction,
service of process, attachment (both before and after judgment) and execution to
which it might otherwise be entitled in the Specified Courts, and with respect
to any Related Judgment, each party waives any such immunity in the Specified
Courts or any other court of competent jurisdiction, and will not raise or claim
or cause to be pleaded any such immunity at or in respect of any such Related
Proceeding or Related Judgment, including, without limitation, any immunity
pursuant to the United States Foreign Sovereign Immunities Act of 1976, as
amended.

     Section 17. Failure of One or More of the Selling Shareholders to Sell and
Deliver Common Shares.  If one or more of the Selling Shareholders shall fail to
sell and deliver to the Underwriters the Shares to be sold and delivered by such
Selling Shareholders at the First Closing Date pursuant to this Agreement, then
the Underwriters may at their option, by written notice from the Representatives
to the Company and the Selling Shareholders, either (i) terminate this Agreement
without any liability on the part of any Underwriter or, except as provided in
Sections 4, 6, 8 and 9 hereof, the Company or the Selling Shareholders, or (ii)
purchase the shares which the Company and other Selling Shareholders have agreed
to sell and deliver in accordance with the terms hereof.  If one or more of the
Selling Shareholders shall fail to sell and deliver to the Underwriters the
Shares to be sold and delivered by such Selling Shareholders pursuant to this
Agreement at the First Closing Date or the Second Closing Date, then the
Underwriters shall have the right, by written notice from the Representatives to
the Company and the Selling Shareholders, to postpone the First Closing Date or
the Second Closing Date, as the case may be, but in no event for longer than
seven days in order that the required changes, if any, to the Registration
Statement and the Prospectus or any other documents or arrangements may be
effected.

     Section 18.  General Provisions.  This Agreement constitutes the entire
agreement of the parties to this Agreement and supersedes all prior written or
oral

                                       33


and all contemporaneous oral agreements, understandings and negotiations with
respect to the subject matter hereof. This Agreement may be executed in two or
more counterparts, each one of which shall be an original, with the same effect
as if the signatures thereto and hereto were upon the same instrument. This
Agreement may not be amended or modified unless in writing by all of the parties
hereto, and no condition herein (express or implied) may be waived unless waived
in writing by each party whom the condition is meant to benefit. The section
headings herein are for the convenience of the parties only and shall not affect
the construction or interpretation of this Agreement.

          Each of the parties hereto acknowledges that it is a sophisticated
business person who was adequately represented by counsel during negotiations
regarding the provisions hereof, including, without limitation, the
indemnification provisions of Section 8 and the contribution provisions of
Section 9, and is fully informed regarding said provisions.  Each of the parties
hereto further acknowledges that the provisions of Sections 8 and 9 hereto
fairly allocate the risks in light of the ability of the parties to investigate
the Company, its affairs and its business in order to assure that adequate
disclosure has been made in the Registration Statement, any preliminary
prospectus and the Prospectus (and any amendments and supplements thereto), as
required by the Securities Act and the Exchange Act.

                                       34


          If the foregoing is in accordance with your understanding of our
agreement, kindly sign and return to the Company, the Selling Shareholders and
the Custodian the enclosed copies hereof, whereupon this instrument, along with
all counterparts hereof, shall become a binding agreement in accordance with its
terms.

                              Very truly yours,

                              ENTEGRIS INC.



                              By:__________________________
                              Name:
                              Title:


                              SELLING SHAREHOLDERS:


                              Entegris, Inc. Employee Stock Ownership Plan


                              By:  HSBC Bank USA, not in its individual or
                                   corporate capacity, but solely as trustee


                                    By:
                                    Name:
                                    Title:



                              WCB HOLDING LLC


                              By:__________________________
                              Name:
                              Title:

                                       35


          The foregoing Underwriting Agreement is hereby confirmed and accepted
by the Representatives in San Francisco, California as of the date first above
written.

BANC OF AMERICA SECURITIES LLC
DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION
SALOMON SMITH BARNEY, INC.
U.S. BANCORP PIPER JAFFRAY INC.

Acting as Representatives of the
several Underwriters named in
the attached Schedule A.

By BANC OF AMERICA SECURITIES LLC


By: __________________________
Name:
Title:

                                       36