EAGLE-PICHER DEVELOPMENT COMPANY, INC.

                                     BY-LAWS

                                    ARTICLE I

                                     OFFICES

               Section 1. The registered office shall be in the City of
Wilmington, County of New Castle, State of Delaware.

               Section 2. The Corporation may also have offices at such other
places both within and without the State of Delaware as the board of directors
may from time to time determine or the business of the Corporation may require.

                                   ARTICLE II

                            MEETINGS OF STOCKHOLDERS

               Section 1. All meetings of the stockholders for the election of
directors or for any other purpose shall be held at such time and place, within
or without the State of Delaware, as shall be stated in the notice of the
meeting or in a duly executed waiver of notice thereof.

               Section 2. Annual meetings of stockholders, commencing with the
year 1988, shall be held at such date and time as shall be designated from time
to time by the board of directors and stated in the notice of the meeting, at
which they shall elect by a plurality vote or by written ballot a board of
directors, and transact such other business as may properly be brought before
the meeting.









               Section 3. Written notice of the annual meeting stating the
place, date and hour of the meeting shall be given to each stockholder entitled
to vote at such meeting not less than ten nor more than sixty days before the
date of the meeting.

               Section 4. Special meetings of the stockholders, for any purpose
or purposes, unless otherwise prescribed by statute or by the certificate of
incorporation, may be called by the president and shall be called by the
president or secretary at the request in writing of a majority of the board of
directors, or at the request in writing of stockholders owning a majority in
amount of the entire capital stock of the Corporation issued and outstanding and
entitled to vote. Such request shall state the purpose or purposes of the
proposed meeting.

               Section 5. Written notice of a special meeting stating the place,
date and hour of the meeting and the purpose or purposes for which the meeting
is called, shall be given not less than ten nor more than sixty days before the
date of the meeting, to each stockholder entitled to vote at such meeting.

               Section 6. The holders of a majority of the stock issued and
outstanding and entitled to vote thereat, present in person or represented by
proxy, shall constitute a quorum at all meetings of the stockholders for the
transaction of business except as otherwise provided by statute or by the
certificate of incorporation. If, however, such quorum shall not be present or
represented at any meeting of the


                                      -2-









stockholders, the stockholders entitled to vote thereat, present in person or
represented by proxy, shall have power to adjourn the meeting from time to time,
without notice other than announcement at the meeting, until a quorum shall be
present or represented.

               Section 7. When a quorum is present at any meeting, the vote of
the holders of a majority of the stock having voting power present in person or
represented by proxy shall decide any question brought before such meeting,
unless the question is one upon which by express provision of the statutes or of
the certificate of incorporation, a different vote is required in which case
such express provision shall govern and control the decision of such question.

               Section 8. Each stockholder shall at every meeting of the
stockholders be entitled to one vote in person or by proxy for each share of the
capital stock having voting power held by such stockholder.

               Section 9. Any action required to be taken at any annual or
special meeting of stockholders of the Corporation, or any action which may be
taken at any annual or special meeting of such stockholders, may be taken
without a meeting, without prior notice and without a vote, if a consent in
writing, setting forth the action so taken, shall be signed by the holders of
outstanding stock having not less than the minimum number of votes that would be
necessary to authorize or take such action at a meeting at which all shares
entitled to vote thereon were present and voted.


                                      -3-









                                   ARTICLE III

                                    DIRECTORS

               Section 1. The board of directors shall consist of one or more
members. The first board shall consist of three directors. Thereafter the number
of directors shall be determined by resolution of the board of directors or by
the stockholders at the annual meeting or a special meeting. The directors shall
be elected at the annual meeting of the stockholders, except as provided in
Section 2 of this Article, and each director elected shall hold office until his
successor is elected and qualified. Directors need not be stockholders.

               Section 2. Vacancies and newly created directorships resulting
from any increase in the authorized number of directors may be filled by a
majority of the directors then in office, though less than a quorum, or by a
sole remaining director, and the directors so chosen shall hold office until the
next annual election and until their successors are duly elected and shall
qualify, unless sooner displaced. If there are no directors in office, then an
election of directors may be held in the manner provided by statute.

               Section 3. The business and affairs of the Corporation shall be
managed by or under the direction of its board of directors which may exercise
all such powers of the Corporation and do all such lawful acts and things as are
not by statute or by the certificate of incorporation or by these by-laws
directed or required to be exercised or done by the stockholders.


                                      -4-









               Section 4. The board of directors of the Corporation may hold
meetings, both regular and special, either within or without the State of
Delaware.

               Section 5. Regular meetings of the board of directors may be held
without notice at such time and at such place as shall from time to time be
determined by the board.

               Section 6. Special meetings of the board may be called by the
chairman of the board or by the president on one day's notice to each director,
either personally or by mail or by telegram; special meetings shall be called by
the president or secretary in like manner and on like notice on the written
request of two directors.

               Section 7. At all meetings of the board a majority of the
directors then in office shall constitute a quorum for the transaction of
business and the act of a majority of the directors present at any meeting at
which there is a quorum shall be the act of the board of directors, except as
may be otherwise specifically provided by statute or by the certificate of
incorporation. If a quorum shall not be present at any meeting of the board of
directors the directors present thereat may adjourn the meeting from time to
time, without notice other than announcement at the meeting, until a quorum
shall be present.

               Section 8. Unless otherwise restricted by the certificate of
incorporation or these by-laws, any action required or permitted to be taken at
any meeting of the board


                                      -5-










of directors or of any committee thereof may be taken without a meeting, if all
members of the board or committee, as the case may be, consent thereto in
writing, and the writing or writings are filed with the minutes or proceedings
of the board or committee.

               Section 9. Unless otherwise restricted by the certificate of
incorporation or these by-laws, members of the board of directors, or any
committee designated by the board of directors, may participate in a meeting of
the board of directors, or any committee, by means of conference telephone or
similar communications equipment by means of which all persons participating in
the meeting can hear each other, and such participation in a meeting shall
constitute presence in person at the meeting.

               Section 10. The board of directors may, by resolution passed by a
majority of the whole board, designate one or more committees, each committee to
consist of one or more of the directors of the Corporation. The board may
designate one or more directors as alternate members of any committee, who may
replace any absent or disqualified member at any meeting of the committee. Any
such committee, to the extent provided in the resolution of the board of
directors, shall have and may exercise all the powers and authority of the board
of directors in the management of the business and affairs of the Corporation,
and may authorize the seal of the Corporation to be affixed to all papers which
may require it; but no such


                                      -6-









committee shall have the power or authority in reference to amending the
certificate of incorporation, adopting an agreement of merger or consolidation,
recommending to the stockholders the sale, lease or exchange of all or
substantially all of the Corporation's property and assets, recommending to the
stockholders a dissolution of the Corporation or a revocation of a dissolution,
or amending the by-laws of the Corporation; and, unless the resolution or the
certificate of incorporation expressly so provide, no such committee shall have
the power or authority to declare a dividend or to authorize the issuance of
stock. Such committee or committees shall have such name or names as may be
determined from time to time by resolution adopted by the board of directors.

               Section 11. Each committee shall keep regular minutes of its
meetings and report the same to the board of directors when required.

                                   ARTICLE IV

                                     NOTICES

               Section 1. Whenever, under the provisions of the statutes or of
the certificate of incorporation or of these by-laws, notice is required to be
given to any director or stockholder, it shall not be construed to mean personal
notice, but such notice may be given in writing, by mail, addressed to such
director or stockholder, at his address as it appears on


                                      -7-









the records of the Corporation, with postage thereon prepaid, and such notice
shall be deemed to be given at the time when the same shall be deposited in the
United States mail. Notice to directors may also be given by telegram or
telephone.

               Section 2. Whenever any notice is required to be given under the
provisions of the statutes or of the certificate of incorporation or of these
by-laws, a waiver thereof in writing, signed by the person or persons entitled
to said notice, whether before or after the time stated therein, shall be deemed
equivalent thereto.

                                    ARTICLE V

                                    OFFICERS

               Section 1. The officers of the Corporation shall be chosen by the
board of directors and shall be a president, a secretary and a treasurer. The
board of directors may also choose a chairman of the board of directors, one or
more vice-presidents, and one or more assistant secretaries and assistant
treasurers. Any number of offices may be held by the same person, unless the
certificate of incorporation or these by-laws otherwise provide.

               Section 2. The officers of the Corporation shall hold office
until their successors are chosen and qualified. Any officer elected or
appointed by the board of directors may be removed at any time by the
affirmative vote of a majority of the board of directors. Any vacancy occurring
in any office of the Corporation shall be filled by the board of directors.


                                      -8-









               Section 3. The officers of the Corporation shall have such
authority and shall perform such duties as are customarily incident to their
respective offices, or as may be specified from time to time by the directors
regardless of whether such authority and duties are customarily incident to such
office.

                                   ARTICLE VI

                              CERTIFICATES OF STOCK

               Section 1. Every holder of stock in the Corporation shall be
entitled to have a certificate, signed in the name of the Corporation by the
president or a vice-president and the secretary or an assistant secretary of the
Corporation, certifying the number of shares owned by him in the Corporation.

               Section 2. Upon surrender to the Corporation or the transfer
agent of the Corporation of a certificate for shares duly endorsed or
accompanied by proper evidence of succession, assignation or authority to
transfer, it shall be the duty of the Corporation to issue a new certificate to
the person entitled thereto, cancel the old certificate and record the
transaction upon its books.

                                   ARTICLE VII

                    INDEMNIFICATION OF DIRECTORS AND OFFICERS

               Each person who is or was or had agreed to become a director or
officer of the Corporation, or each such person who is or was serving or had
agreed to serve at the request of the


                                      -9-









Board of directors or an officer of the Corporation as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise (including the heirs, executors, administrators or estate of
such person), shall be indemnified by the Corporation to the full extent
permitted by the General Corporation Law of the State of Delaware or any other
applicable laws as presently or hereafter in effect. Without limiting the
generality or effect of the foregoing, the Corporation may enter into one or
more agreements with any person which provide for indemnification greater or
different than that provided in this Article VII. No amendment to or repeal of
this Article VII shall apply to or have any effect on the right to indemnity
permitted or authorized hereunder for or with respect to claims asserted before
or after such amendment or repeal arising from acts or omissions occurring in
whole or in part before the effective date of such amendment or repeal. The
Corporation may, but shall not be obligated to, maintain insurance, at its
expense, for its benefit in respect of such indemnification and that of any
person whether or not the Corporation would otherwise have the power to
indemnify such person.

                                  ARTICLE VIII

                               GENERAL PROVISIONS

               Section 1. Dividends upon the capital stock of the Corporation,
subject to the provisions of the certificate of


                                      -10-









incorporation, if any, may be declared by the board of directors at any regular
or special meeting, pursuant to law. Dividends may be paid in cash, in property,
or in shares of the capital stock, subject to the provisions of the certificate
of incorporation.

               Section 2. Before payment of any dividend, there may be set aside
out of any funds of the Corporation available for dividends such sum or sums as
the directors from time to time, in their absolute discretion, think proper as a
reserve or reserves to meet contingencies, or for equalizing dividends, or for
repairing or maintaining any property of the Corporation, or for such other
purpose as the directors shall think conducive to the interest of the
Corporation, and the directors may modify or abolish any such reserve in the
manner in which it was created.

               Section 3. All checks or demands for money and notes of the
Corporation shall be signed by such officer or officers or such other person or
perscns as the board of directors may from time to time designate.

               Section 4. The board of directors may adopt a corporate seal and
use the same by causing it or a facsimile thereof to be impressed or affixed or
reproduced or otherwise.

                                   ARTICLE IX

                                   AMENDMENTS

               Section 1. These by-laws may be altered, amended or repealed or
new by-laws may be adopted by the stockholders or by the board of directors.


                                      -11-














                                    Exhibit C

                                Board Resolutions