EXHIBIT 10.28


                            STOCK PURCHASE AGREEMENT


                                                                  July 23, 1999


Hartford Capital Appreciation Fund, Inc.
c/o Wellington Management Company, LLP
75 State Street
Boston, MA 02109

Dear Sirs:

                  Terex  Corporation,  a Delaware  corporation  (the "Company"),
proposes to issue and sell 2,000,000 shares ("Offered Securities") of its Common
Stock, par value $.01 per share. The Company hereby agrees with Hartford Capital
Appreciation Fund, Inc.
("Investor") as follows:

         1.   Representations  and  Warranties  of  the  Company.   The  Company
represents and warrants to, and agrees with, the Investor that:

     (i) A registration statement (No. 333-52933), including a basic prospectus,
relating to certain of the Company's equity and debt securities and warrants and
rights (including the Offered  Securities) and the offering thereof from time to
time in accordance  with Rule 415 under the  Securities  Act of 1933, as amended
(the  "Act")  has  been  filed  with  the  Securities  and  Exchange  Commission
("Commission")  and has been  declared  effective  under the Act and the Offered
Securities  all  have  been  duly  registered  under  the Act  pursuant  to such
registration  statement.  Such registration statement, as amended as of the date
hereof, including all material incorporated by reference therein, is hereinafter
referred to as the "Registration  Statement".  The basic prospectus  included in
such  Registration  Statement,  as  supplemented  by the filing of a  prospectus
supplement (the "Prospectus Supplement") to reflect the terms of the offering of
the Offered  Securities,  as first filed with the Commission  pursuant to and in
accordance with Rule 424(b) under the Act,  including all material  incorporated
by reference in such basic prospectus and Prospectus Supplement,  is hereinafter
referred to as the "Prospectus".

     (ii) The Company has been duly incorporated and is an existing  corporation
in good  standing  under the laws of the State of Delaware,  with the  corporate
power and authority to own its  properties and conduct its business as described
in the Prospectus; and the Company is duly qualified to do business as a foreign
corporation in good standing in all other  jurisdictions  in which its ownership
or lease of property or the conduct of its business requires such qualification,
except  where the  failure to be so  qualified  and in good  standing  could not
reasonably be expected,  individually  or in the  aggregate,  to have a material
adverse effect on the condition  (financial or other),  business,  properties or
results of  operations of the Company and its  subsidiaries  taken as a whole (a
"Material Adverse Effect").


     (iii) The Offered Securities,  when issued pursuant to this Agreement, will
be, and all other outstanding  shares of capital stock of the Company have been,
duly  authorized and validly  issued,  will be or are, as the case may be, fully
paid and nonassessable,  and conform in all material respects to the description
thereof contained in the Prospectus; and the stockholders of the Company have no
preemptive rights with respect to the Securities.

     (iv) No consent, approval,  authorization, or order of, or filing with, any
governmental  agency or body or any court is  required to be obtained or made by
the Company for the  performance  by the Company of its  obligations  under this
Agreement,  except such as have been obtained and made under the Act and such as
may be required under state securities laws.

     (v) The  execution and delivery by the Company of, and the  performance  by
the Company of its
obligations  under,  this  Agreement will not result in a breach or violation of
any of the terms and provisions of, or constitute a default under,  any statute,
any rule,  regulation or order of any governmental  agency or body or any court,
domestic  or  foreign,  having  jurisdiction  over  the  Company  or  any of its
properties, or any agreement or instrument to which the Company is a party or by
which the Company is bound or to which any of the  properties  of the Company is
subject, or the charter or by-laws of the Company, except in each such case, for
such  breaches,  violations  and defaults as could not  reasonably  be expected,
individually or in the aggregate, to have a Material Adverse Effect.

     (vi) This Agreement has been duly authorized, executed and delivered by the
Company, and this Agreement constitutes the valid and legally binding obligation
of the Company,  enforceable  against the Company in accordance  with its terms,
subject  to  bankruptcy,   insolvency,   fraudulent  transfer,   reorganization,
moratorium  and similar laws of general  applicability  relating to or affecting
creditors' rights and to general principles of equity.

         2.  Representations  and  Warranties  of  the  Investor.  The  Investor
represents and warrants to, and agrees with, the Company that:

     (i) The  Investor  has been duly formed and  organized,  and is an existing
limited   liability   partnership  in  good  standing  under  the  laws  of  the
Commonwealth of Massachusetts.

     (ii) The execution and delivery by the Investor of, and the  performance by
the  Investor of its  obligations  under,  this  Agreement  will not result in a
breach or  violation  of any of the terms and  provisions  of, or  constitute  a
default under,  any statute,  any rule,  regulation or order of any governmental
agency or body or any court,  domestic or foreign,  having jurisdiction over the
Investor or any of its  properties,  or any agreement or instrument to which the
Investor  is a party or by which  the  Investor  is bound or to which any of the
properties of the Investor is subject,  or the  organizational  documents of the
Investor,  except in each such case, for such breaches,  violations and defaults
as could not reasonably be expected, individually or in the aggregate, to have a
Material Adverse Effect.


     (iii) This  Agreement has been duly  authorized,  executed and delivered by
the  Investor,  and this  Agreement  constitutes  the valid and legally  binding
obligation of the Investor,  enforceable against the Investor in accordance with
its   terms,   subject   to   bankruptcy,   insolvency,   fraudulent   transfer,
reorganization, moratorium and similar laws of general applicability relating to
or affecting creditors' rights and to general principles of equity.

         3. Purchase,  Sale and Delivery of Offered Securities.  On the basis of
the  representations,  warranties and agreements herein  contained,  the Company
agrees to sell to the Investor,  and the Investor agrees to purchase the Offered
Securities from the Company,  at an aggregate  purchase price of  $59,137,500.00
(or $29.56875 per share).

         The  Company  will  deliver  the Offered  Securities  to the  Investor,
against  payment  of the  purchase  price in  Federal  (same  day) funds by wire
transfer to an account at a United States  financial  institution  designated in
advance in  writing by the  Company,  at 9:00 A.M.,  New York time,  on July 28,
1999, or at such other time not later than seven full  business days  thereafter
as the  Investor and the Company  determine.  The  certificates  for the Offered
Securities to be so delivered will be in definitive form, in such  denominations
and registered in such names as the Investor requests.

         4. Listing of Shares. The Company agrees to list the Offered Securities
on the New York Stock Exchange.

         5. Notices.  All  communications  hereunder  will be in writing and, if
sent to the Investor, will be mailed,  delivered or telegraphed and confirmed to
the  Investor,  at  Wellington   Management,   LLP,  75  State  Street,  Boston,
Massachusetts 02109,  Attention:  Lisa Yee, or, if sent to the Company,  will be
mailed,  delivered or telegraphed and confirmed to it at Terex Corporation,  500
Post Road East, Westport, CT 06880, Attention: Eric I Cohen.

         6.  Successors.  This  Agreement  will  inure to the  benefit of and be
binding upon the parties hereto and their  respective  personal  representatives
and  successors and the officers and directors and no other person will have any
right or obligation hereunder.

         7.  Counterparts.  This  Agreement  may be  executed  in any  number of
counterparts,  each of which  shall be  deemed to be an  original,  but all such
counterparts shall together constitute one and the same Agreement.

         8.  Applicable  Law. This Agreement shall be governed by, and construed
in  accordance  with,  the laws of the  State of New  York,  without  regard  to
principles of conflicts of laws.


         If the foregoing is in accordance with the Investor's  understanding of
our  agreement,  kindly sign and return to the  Company one of the  counterparts
hereof,  whereupon it will become a binding  agreement among the Company and the
Investor in accordance with its terms.


                                                     Very truly yours,

                                                     TEREX CORPORATION


                                                     By:
                                                          Name:
                                                          Title:


         The foregoing Stock Purchase Agreement is hereby confirmed and accepted
as of the date first above written.


HARTFORD CAPITAL APPRECIATION FUND, INC.
By:      Wellington Management Company, LLP,
         its Investment Advisor


By:____________________________
           Peter L. Curry
           Vice President