TOWER TECH INC
8-K, 1998-12-18
PLASTICS PRODUCTS, NEC
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


                                December 4, 1998
                        (Date of earliest event reported)


                                Tower Tech, Inc.
             (Exact name of registrant as specified in its charter)


         Oklahoma                  1-12556                    73-1210013
(State or other jurisdiction     (Commission                (IRS  Employer
        of incorporation)        File Number)              Identification No.)


 11935 South I-44 Service Road, Oklahoma City, Oklahoma             73173
     (Address of principal executive offices)                     (Zip Code)


                                 (405) 290-7788
               Registrant's telephone number, including area code


<PAGE>


Item 1.    Changes in Control of Registrant.

           Not Applicable.

Item 2.    Acquisition or Disposition of Assets.

           On  December  4,  1998,  the  Company  consummated  the  sale  of its
           industrial  modular cooling tower rental division (the "Division") to
           Aggreko Inc., an unrelated party,  for $13,500,000,  with $12,150,000
           paid in cash at closing and the remaining $1,350,000 paid by delivery
           of  Aggreko  Inc.'s  promissory  note (the  "Note").  The Note  bears
           interest at 1% above prime. The outstanding  principal balance of the
           Note, together with accrued interest,  is due and payable on December
           4, 1999.  The assets sold  included the modular  cooling tower rental
           division fleet,  other rental division fleet  equipment,  and certain
           assets used in the operation of the rental division. The Company will
           continue to operate  its  businesses  of  building  factory-assembled
           cooling towers and field-erected cooling towers.

           The purchase price for the assets sold was determined  based upon the
           results of arm's length negotiations  between  representatives of the
           Company and Aggreko Inc.

           In connection with the sale of assets described above,  Aggreko Inc.,
           the Company,  and Harold D. Curtis,  the  Company's  Chief  Executive
           Officer, entered into a Noncompetition  Agreement. The Noncompetition
           Agreement  generally  prohibits  the  Company  and  Mr.  Curtis  from
           conducting any business in competition with the Division,  as well as
           hiring or  contacting  certain of the Company's  prior  employees who
           worked in the Division.

           Additionally,  in connection with the sale of assets described above,
           the Company and Aggreko Inc.  entered into a License  Agreement and a
           Supply  Agreement.  The License  Agreement  grants to Aggreko Inc. an
           exclusive  license  to use for a limited  time  period  the  patents,
           trademarks,  trade names and other proprietary  rights related to the
           Division.  The Supply  Agreement  describes  the terms upon which the
           Company  has agreed to sell to Aggreko  Inc.,  and Aggreko  Inc.  has
           agreed to purchase from the Company,  all modular cooling tower units
           and replacement parts necessary for future operations of the
           Division.

           This description of the Asset Purchase  Agreement,  the Note, and the
           related documents described above, and the transactions  provided for
           in such documents,  is not complete.  It is qualified by reference to
           the  Asset  Purchase  Agreement,  a copy of which  has been  filed as
           Exhibit 99.1 to this Current Report,  and the other  agreements filed
           as exhibits to this Current Report.

Item 3.    Bankruptcy or Receivership.

           Not Applicable.

Item 4.    Changes in Registrant's Certifying Accountant.

           Not Applicable.
Item 5.    Other Events.

           Not Applicable.

Item 6.    Resignations of Registrant's Directors.

           Not Applicable.

Item 7.    Financial Statement and Exhibits.

           (a)    Financial statements of business acquired.

                  None.

           (b) Pro forma financial information.

                  Attached.

           (c)    Exhibits.

                  99.1     Asset Purchase Agreement dated as of December 4, 1998
                           between the Company and Aggreko Inc.

                  10.26    Promissory Note dated as of December 4, 1998  to  the
                           Company from Aggreko Inc.

                  10.27    Noncompetition Agreement dated as of December 4, 1998
                           between the Company, Harold D Curtis and Aggreko Inc.

                  10.28    License Agreement dated as of December 4,1998 between
                           the Company and Aggreko Inc.

                  10.29    Supply Agreement dated as of December 4, 1998 between
                           the Company and Aggreko Inc.


Item 8.    Change in Fiscal Year.

           Not Applicable.

Item 9.    Sales of Equity Securities Pursuant to Regulation S.

           Not Applicable.



<PAGE>


                                TOWER TECH, INC.
                            INTRODUCTION TO PRO FORMA
                   CONDENSED FINANCIAL INFORMATION (UNAUDITED)

         In December  1998,  Tower Tech,  Inc.  consummated  the sale of certain
assets  constituting its rental division to Aggreko Inc. The Unaudited Condensed
Pro Forma Statements of Operations for the year ended November 30, 1997, and for
the nine months  ended August 31, 1998,  presents the results of  operations  of
Tower Tech, Inc.  assuming the sale of the rental division had been  consummated
as of the beginning of the period presented.

         The  Unaudited  Condensed Pro Forma Balance Sheet as of August 31, 1998
reflects the assets,  liabilities  and the  capitalization  of Tower Tech, Inc.,
assuming the sale occurred on August 31, 1998, after giving  effect to the
elimination  of the  disposed  assets of the rental division and receipt of
the sale proceeds.

         The pro forma  information  does not  purport to be  indicative  of the
results of operations or the financial  position  which would have actually been
obtained  if  the  disposition  transactions  had  been  consummated  as above
described.  In  addition,  the pro  forma  financial information  does not 
purport to be  indicative  of results  of  operations  or financial position
which may be obtained in the future.

         The pro forma financial  information should be read in conjunction with
Tower Tech, Inc.'s historical  Financial  Statements and Notes thereto contained
in the 1997 Annual Report of Form 10-KSB, and Form 10-QSB for the period ending
August 31, 1998.


<PAGE>


                                TOWER TECH, INC.
                   UNAUDITED CONDENSED PRO FORMA BALANCE SHEET

                              As of August 31, 1998
<TABLE>
<CAPTION>
                              (Dollars in thousands)

<S>                                  <C>             <C>             <C>
                                                       PRO FORMA
                                    HISTORICAL        ADJUSTMENTS     PRO FORMA
Assets
    Current assets                    $ 14,305        $ 13,500  A     $  20,274
                                                        (7,531) B
    Property and equipment, net         21,727          (6,865) A        14,862
    Other assets                         2,338            (775) A         1,523
                                                           (40) B         
                                      ---------        -----------    ----------

Total assets                          $ 38,370           $ (1,711)     $ 36,659
                                      =========        ===========     =========

Liabilities and stockholders equity
    Current liabilities               $ 16,222           $(7,531) B    $  8,691
    Income taxes                                           1,971  A       1,971
    Long term debt                      15,487                           15,487
    Stockholders' equity                 6,661             3,889  A      10,510
                                                             (40) B                    

Total liabilities and stockholders'
  equity                              $ 38,370           $  (1,711)    $ 36,659
                                      =========          ==========    =========

Pro forma adjustments:

A)      To record the sale of rental division assets for $13.5 million and
        recognize related tax effect, including reduction of $775 deferred tax
        asset related to utilization of NOL carryforward.

B)      To record the use of proceeds to pay off the Company's line of credit
        facility and write off related debt issue costs.

</TABLE>
<PAGE>


                                TOWER TECH, INC.
              UNAUDITED CONDENSED PRO FORMA STATEMENT OF OPERATIONS

                    For The Nine Months Ended August 31, 1998
<TABLE>
<CAPTION>
                 (Dollars in thousands, except per share amounts)

<S>                                 <C>            <C>               <C>                          
                                                     PRO FORMA
                                    HISTORICAL      ADJUSTMENTS       PRO FORMA

Total revenues                      $  17,979       $ (5,030) A       $  12,949
Cost of goods sold and constructed     14,397           (613) A          13,784
                                    ----------      ------------       ---------

Gross profit                            3,582         (4,417)              (835)
General, administrative, selling,
    and research and development        3,692            (22) A           3,670
                                     ---------       -----------       ---------

Operating loss                           (110)        (4,395)            (4,505)
Interest expense                         (727)           209  B            (518)
Other income                               87                                87
                                     ----------       ----------       ---------

Loss before income taxes                 (750)         (4,186)           (4,936)
Income tax benefit                        300           1,675  C          1,975
                                     ----------       ----------       ---------

Net loss                             $   (450)      $  (2,511)         $ (2,961)
                                     ===========    ===========        =========

Weighted average shares outstanding -
    basic and diluted                3,532,355                        3,532,355
                                     =========                        =========

Net loss per common share -
    basic and diluted                $   (0.13)                       $   (0.84)
                                     ===========                     ===========


Pro forma adjustments:

        A)    To eliminate the rental division operations.
        B)    To eliminate interest expense related to the rental division.
        C) To record the income  tax  effect of the pro forma  adjustments  at a
statutory rate of 40%.

</TABLE>
<PAGE>


                                TOWER TECH, INC.
              UNAUDITED CONDENSED PRO FORMA STATEMENT OF OPERATIONS

                      For the Year Ended November 30, 1997
<TABLE>
<CAPTION>
                 (Dollars in thousands except per share amounts)

<S>                                 <C>            <C>                <C>
                                                     PRO FORMA
                                    HISTORICAL      ADJUSTMENTS       PRO FORMA

Total revenues                       $ 19,551        $ (1,214) A       $ 18,337
Cost of goods sold and constructed     13,843            (436) A         13,407
                                     ---------       ------------      ---------

Gross profit                            5,708            (778)            4,930
General, administrative, selling,
    and research and development        3,680             (21) A          3,659
                                      --------       -----------       ---------

Operating income                        2,028            (757)            1,271
Interest expense                         (647)             57  B           (590)
Other income                               66                                66
                                      ---------      ------------      ---------

Income before income taxes              1,447            (700)              747
Income tax benefit                        616             280  C            896
                                      ---------      ------------      ---------

Net income                          $   2,063        $   (420)        $   1,643
                                    ===========      ===========      ==========

Weighted average shares outstanding -
    basic and diluted               3,538,113                         3,538,113
                                    =========                         =========

Net income per common share -
    basic and diluted               $    0.58                         $    0.46
                                    ==========                        ==========


Pro forma adjustments:

        A)    To eliminate the rental division operations.
        B)    To eliminate interest expense related to the rental division.
        C) To record the income  tax  effect of the pro forma  adjustments  at a
statutory rate of 40%.

</TABLE>
<PAGE>



                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                TOWER TECH, INC.



Date:  December 18, 1998                      By:ss/CHARLES D. WHITSITT
                                                 ------------------------
                                                 Charles D. Whitsitt
                                                 Chief Financial Officer



                           ASSET PURCHASE AGREEMENT

         THIS ASSET PURCHASE  AGREEMENT  (this  "Agreement") is made and entered
into as of the  4th day of  December,  1998,  by and  between  AGGREKO  INC.,  a
Louisiana   corporation   ("Purchaser")   and  TOWER  TECH,  INC.,  an  Oklahoma
corporation ("Seller").

                                                     WITNESSETH:

         WHEREAS,  Seller is  currently  engaged in the business of, among other
things, leasing and renting industrial modular cooling towers (the "Business");

         WHEREAS,  in  consideration of certain payments to be made to Seller by
Purchaser and the assumption of certain liabilities by Purchaser, Seller desires
to sell to Purchaser  and Purchaser  desires to purchase  from Seller,  upon the
terms and subject to the conditions  hereinafter  set forth,  the Business as an
ongoing concern,  together with  substantially all of the properties and assets,
tangible or intangible,  of Seller used in connection with the Business  (except
for the Retained Assets, as defined in Section 1.02 hereof); and

         WHEREAS,  Seller  will derive  certain  substantial  benefits  from the
transactions  contemplated  by this  Agreement  and in  connection  therewith is
willing to (i)  deliver to  Purchaser  certain  agreements  not to compete  with
Purchaser  and the  Business  for a  reasonable  period  of  time in a  specific
geographic area, and (ii) make certain  representations,  warranties,  covenants
and agreements set forth herein.

         NOW,  THEREFORE,  in  consideration  of the foregoing  premises and the
mutual   covenants   hereinafter   contained   and  other   good  and   valuable
consideration,  the receipt and  sufficiency  of which are hereby  acknowledged,
Purchaser  and Seller,  on the basis of, and in reliance  upon,  the  respective
representations,  warranties, covenants, obligations, indemnities and agreements
set forth in this  Agreement,  and upon the terms and subject to the  conditions
contained herein, hereby agree as follows:

                                    ARTICLE I

                           PURCHASE AND SALE OF ASSETS

         1.01  Assets to be  Purchased.  Subject  to the  terms  and  conditions
hereinafter set forth, and except for the Retained Assets,  Seller hereby agrees
to sell, assign,  transfer,  convey and deliver, or cause to be sold,  assigned,
transferred,  conveyed and  delivered,  to Purchaser,  and  Purchaser  agrees to
purchase,  accept and acquire  from  Seller,  on the Closing Date (as defined in
Section 3.01 hereof),  on a going concern basis, all of the assets,  properties,
rights and interests of every kind and description,  personal or mixed, tangible
or  intangible,  used by Seller in  connection  with the Business  (all of which
assets,  properties,  rights and interests are hereinafter collectively referred
to as the "Acquired Assets"), including, without limitation, the following:


<PAGE>



                                                                   

                  (a)  Tangible  Personal  Property.  All  of  Seller's  modular
         cooling tower rental fleet,  equipment  inventories,  including  pumps,
         electrical distribution panels, heat exchangers,  pipings, fittings and
         other inventoried items (collectively,  the "Rental  Equipment"),  shop
         equipment,  tools,  operating  supplies,  and other  tangible  personal
         property  used in  connection  with the  Business,  including,  without
         limitation, those assets listed on Schedule 1.01(a) to this Agreement.

                  (b)  Books,  Records  and  Written  Materials.  All  books  of
         account,  records,  files,  invoices,  customer lists,  supplier lists,
         promotional  and  advertising  materials,   plans,  designs  and  other
         drawings, catalogs,  brochures, manuals and handbooks and other similar
         data  reduced to writing or other  storage  media and used by Seller in
         connection with the Business or any Acquired Asset  (collectively,  the
         "Documentary Information").

                  (c) Third Party Warranties.  All rights and benefits of Seller
         under any and all  manufacturer's,  merchant's,  repairmen's  and other
         third-party warranties,  guaranties and service or replacement programs
         relating to the  Business or any  Acquired  Asset,  including,  without
         limitation,  those assets listed on Schedule  1.01(c) to this Agreement
         (collectively, the "Warranties").

                  (d) Personal Property Leases. All of Seller's right, title and
         interest in and to those personal  property leases  (collectively,  the
         "Personal   Property  Leases")  listed  on  Schedule  1.01(d)  to  this
         Agreement (collectively, the "Leased Personal Property").

                  (e) Acquired Contracts.  All rights and benefits of Seller in,
         to or under those written  agreements,  contracts,  sales  commitments,
         purchase  orders,   customer   commitments,   security   agreements  or
         instruments and undertakings entered into in the ordinary course of the
         Business  which have been (i) entered into on or before the date hereof
         and are  listed  on  Schedule  1.01(e)  to this  Agreement  or (ii) are
         entered  into after the date  hereof,  are related  exclusively  to the
         Business  and  satisfy  the  requirements  of  Section  6.02(c)  hereof
         (collectively, the "Acquired Contracts").

                  (f)  Permits  and  Approvals.  All of the  licenses,  permits,
         approvals,  variances,  rights, waivers or consents (collectively,  the
         "Permits")  issued to Seller by any  federal,  state,  county,  parish,
         local or foreign  governmental  entity or  municipality  or subdivision
         thereof or any authority,  arbitrator,  department,  commission, board,
         bureau, body, agency, court or instrumentality  thereof  (collectively,
         "Governmental   Authorities")   and  used  by  Seller   exclusively  in
         connection  with the  operations  of the Business,  including,  without
         limitation, the Permits listed on Schedule 1.01(f) to this Agreement.

                  (g) Goodwill. The goodwill associated with the Business.



<PAGE>


         1.02 Retained  Assets.  Notwithstanding  anything  contained in Section
1.01 hereof to the contrary, Seller shall, and hereby does, expressly retain all
of  Seller's  right,  title  and  interest  in  and  to  the  following  assets,
properties, rights and interests,  including, without limitation, certain assets
related to the  Business  which are  expressly  described  herein  (all of which
assets,  properties,  rights and interests are hereinafter collectively referred
to as the "Retained Assets"):

                  (a) cash, cash  equivalents, certificates of deposit and other
         investments in marketable securities of third-party issuers;

                  (b) all  receivable  for goods  and/or  services  rendered  by
         Seller with respect to the Business prior to the Closing Date;

                  (c)  assets,  properties  and rights  related  exclusively  to
         affiliates, divisions or operations of Seller other than the Business;

                  (d) all  intellectual  property  of any and all kinds owned or
         licensed by or to Seller (it being understood that Purchaser shall have
         the right to use certain intellectual  property of Seller as and to the
         extent provided in the License Agreement  referred to in Section 3.07);
         and
                  (e)  any and all  rights  to the  name  "Tower  Tech"  and any
         derivation  thereof;  provided,   however,  that,  without  payment  of
         additional  consideration,  Purchaser  shall be  permitted a transition
         period  from the  Closing  Date until March 31, 1999 or such later date
         mutually agreed to in writing as shall be required to utilize and phase
         out all items or  printed  materials  bearing  the  "Tower  Tech"  name
         included in the Acquired Assets.

         1.03  Assignability and Consents.  To the extent that the assignment of
any Acquired Contract,  Warranties,  Permits,  Documentary  Information,  Leased
Personal  Property  or other  Acquired  Asset to be  assigned  to  Purchaser  as
provided  herein  shall  require the consent or waiver of any third party or any
Governmental  Authority (each a "Required  Consent"),  Seller shall use its best
efforts to obtain the consent or waiver of each such third party or Governmental
Authority to such assignment, in each case in form and substance satisfactory to
Purchaser, on or prior to the Closing Date. Schedule 1.03 to this Agreement sets
forth a list of all of the Required Consents.

         1.04  Assumed  Liabilities  and  Obligations.   On  the  Closing  Date,
Purchaser  shall assume and agree to pay,  perform and discharge as and when due
only the following obligations and liabilities of Seller:

                  (a) All  executory  obligations  with  respect to the Business
         accruing  exclusively,  and  based  upon  events  occurring,  after the
         Closing  Date  under (i) the  Personal  Property  Leases,  and (ii) the
         Acquired Contracts.

         All  of  the  foregoing  to  be  assumed  by  Purchaser  hereunder  are
collectively referred to herein as the "Assumed Liabilities".



<PAGE>


         1.05 Retained  Liabilities and Obligations.  Notwithstanding  any other
provision  of this  Agreement  or  doctrine of law,  Seller  shall  retain,  and
Purchaser  shall not  assume or be liable  with  respect  to, any  liability  or
obligation of Seller ("Retained Liabilities"),  except those expressly described
in,  and only to the  extent  specifically  assumed by  Purchaser  pursuant  to,
Section 1.04 hereof.

                                   ARTICLE II

                                 PURCHASE PRICE

         2.01   Payment.   As  full  payment  for  the  Acquired   Assets,   the
Noncompetition  Agreement  (as  defined in Section  3.06  hereof),  the  License
Agreement  (as  defined in Section  3.07  hereof) and the Supply  Agreement  (as
defined in Section 3.08 hereof),  at the Closing  Purchaser shall (a) assume the
Assumed Liabilities, and (b) shall pay and/or deliver to Seller:

                  (i) the sum of  Twelve  Million  One  Hundred  Fifty  Thousand
Dollars  ($12,150,000.00),  by wire transfer of immediately  available  funds to
such  accounts  as shall be  designated  in writing by Seller at least three (3)
business days prior to the Closing Date (the "Cash Portion"); and
                  (ii) the Purchaser's  promissory note in the principal  amount
of  One  Million  Three  Hundred  Fifty  Thousand  Dollars  ($1,350,000.00)  and
substantially in the form attached hereto as Exhibit A (the "Note").

         2.02 Allocation of Purchase  Price.  The Purchase Price and the Assumed
Liabilities  represent  the amount agreed upon by the parties to be the value of
the Acquired Assets, the Noncompetition Agreement, the License Agreement and the
Supply  Agreement,  it being  further  agreed  that the  Purchase  Price and the
Assumed   Liabilities  shall  be  allocated  among  the  Acquired  Assets,   the
Noncompetition  Agreement,  the License  Agreement  and the Supply  Agreement in
accordance with the allocation set forth on Schedule 2.02.  Purchaser and Seller
shall report the purchase and sale of the Acquired  Assets,  the  Noncompetition
Agreement,  the License  Agreement and the Supply  Agreement in their respective
federal,  state,  local or foreign tax returns in accordance with the allocation
set forth on such Schedule 2.02.

                                   ARTICLE III

                                     CLOSING

         3.01 Date, Time and Place of Closing.  The closing of the  transactions
contemplated by this Agreement (the  "Closing")  shall take place at the offices
of Seller located at two miles east on Highway 62, Chickasha,  Oklahoma 73023 at
12:00 a.m.,  local time,  on  December  4, 1998,  or as promptly as  practicable
thereafter as soon as the conditions set forth in Article VIII are satisfied, or
at such other date,  time or place fixed by mutual written  consent of Purchaser
and Seller,  but in no event later than December 18 , 1998.  All  proceedings to
take place at the Closing shall take place simultaneously, and no delivery shall
be considered to have been made until all such  proceedings  have been completed
(the time and date of such Closing is referred to herein as the "Closing Date").


<PAGE>


         3.02  Conveyance  of Assets.  At the Closing,  Seller shall  deliver or
cause to be delivered to Purchaser for the purpose of transferring  the Acquired
Assets  to  Purchaser  such  documents,  bills of sale,  certificates  of title,
endorsements,  assignments and instruments necessary,  advisable or desirable to
vest in Purchaser good and marketable  title to all of the Acquired Assets being
transferred by Seller to Purchaser  hereunder  (such  documents and  instruments
hereinafter collectively referred to as the "Transfer Documents"), such Acquired
Assets shall be free and clear of any and all liens, prior assignments, security
interests,  charges,  pledges, claims or encumbrances whatsoever  (collectively,
"Liens"), except Liens relating to the Assumed Liabilities.

         3.03 Assumption  Instrument.  At the Closing,  Purchaser  shall, at the
request of Seller,  execute and deliver to Seller the assumption  agreement with
respect to the Assumed Liabilities, in substantially the form attached hereto as
Exhibit B (the "Assumption Instrument").

         3.04 Payment of Purchase Price. At the Closing,  Purchaser shall pay to
Seller  the  Purchase  Price  by  delivering  to  Seller  the  Cash  Portion  as
contemplated by Section 2.01(b)(i) and the Note.

         3.05     Taxes, Charges and Fees.

                  (a) Sales,  Use and Transfer Taxes. At the Closing,  Purchaser
         shall  pay all  transfer  taxes,  documentary  stamp  taxes,  recording
         charges  and other  taxes  imposed  by any  Governmental  Authority  in
         connection  with  the  sale  and,  transfer  of  the  Acquired  Assets.
         Notwithstanding  the  foregoing  sentence,  Seller shall remain  solely
         responsible for any and all taxes imposed by any Governmental Authority
         in connection with the use or rental of the Acquired Assets on or prior
         to  the  Closing  Date.  In  addition,   Seller  shall  have  the  sole
         responsibility  of representing its position in any future audit by any
         Governmental Authority with respect to any tax periods during which the
         Seller owned the Acquired Assets or operated the Business.

                  (b)  Payment of Personal  Property  Taxes.  Personal  property
         taxes  associated  with  the  Acquired  Assets  that are  imposed  on a
         periodic  basis and are  payable  for a tax period  ending on or before
         December  31,  1998 shall be paid by Seller  and Seller  shall have the
         sole  responsibility  of such taxes (and any payments due on account of
         such taxes).In  addition,  Seller  acknowledges  and agrees that Seller
         shall  remain  solely  responsible  for all other  Taxes (as defined in
         Section  4.15) and any payments due on account of such Taxes arising on
         or  prior  to  the  Closing  Date.   Purchaser   shall  have  the  sole
         responsibility  for the payment of personal  property taxes  associated
         with the  Acquired  Assets  (and any  payments  due on  account of such
         taxes) which are payable for a tax period beginning on or after January
         1, 1999.

         3.06 Noncompetition Agreement. At the Closing, Seller, Harold D. Curtis
and Purchaser shall enter into a Noncompetition  Agreement (herein so called) in
substantially the form attached hereto as Exhibit C.




<PAGE>


         3.07 License  Agreement.  At the Closing,  Seller and  Purchaser  shall
enter into a License  Agreement  (herein so  called) in  substantially  the form
attached hereto as Exhibit D.

         3.08 Supply Agreement. At the Closing, Seller and Purchaser shall enter
into a Supply Agreement  (herein so called) in  substantially  the form attached
hereto as Exhibit E.

         3.09 Other  Documents.  All other  documents,  certificates,  consents,
approvals  and  notations,  confirmations  and papers  required by Article  VIII
hereof  as  conditions  to  Closing,  and all  appropriate  receipts,  shall  be
delivered to Seller and to Purchaser, as the case may be, at the Closing.

         3.10  Covenants and Further  Assurance.  Seller shall,  at any time and
from time to time after the Closing Date,  upon request of Purchaser and without
further cost or expense to Purchaser,  execute and deliver such  instruments  of
conveyance and assignment and shall take such action as Purchaser may reasonably
request  to more  effectively  transfer  to and  vest in  Purchaser,  and to put
Purchaser in possession of, any and all of the Acquired  Assets,  free and clear
of any and all Liens,  or otherwise carry out the  transactions  contemplated by
this  Agreement.  Purchaser  shall,  at the time and from time to time after the
Closing  Date,  upon  request of Seller and without  further  cost or expense to
Seller,  execute and deliver such  instruments of assumption and shall take such
other action as Seller may reasonably  request to more  effectively  evidence or
effect the assumption by Purchaser of the Assumed Liabilities or otherwise carry
out the transactions contemplated by this Agreement.

                                   ARTICLE IV

                    REPRESENTATIONS AND WARRANTIES OF SELLER

         In order to induce the  Purchaser to enter into this  Agreement  and to
consummate the transactions  contemplated  hereby,  Seller hereby represents and
warrants as of the date hereof as follows:

         4.01 Organization and Good Standing;  Power and Authority.  Seller is a
corporation duly organized, validly existing and in good standing under the laws
of the State of  Oklahoma.  Seller has full  corporate  power and  authority  to
execute and deliver this Agreement and to perform Seller's obligations hereunder
and to consummate the transactions  contemplated hereby, to operate the Business
as it is now being conducted and to own or lease the Acquired Assets.  Seller is
qualified to do business and is in good standing in each  jurisdiction  in which
the  failure  to so  qualify  would  have a  material  adverse  effect  upon the
Business, the Acquired Assets or Seller.



<PAGE>


         4.02 Corporate Authorization.  The execution,  delivery and performance
of  this  Agreement  and all  other  agreements  and  instruments  executed  and
delivered  by  Seller  in  connection  herewith  and  the  consummation  of  the
transactions  contemplated  hereby  and  thereby  have  been  duly  and  validly
authorized  by all  necessary  corporate  action  on the  part of  Seller.  This
Agreement has been, and the other  agreements and instruments to be executed and
delivered by Seller in  connection  herewith will be, on or prior to the Closing
Date, duly executed and delivered by Seller,  and constitute,  or upon execution
and  delivery  will  constitute,  the valid,  legal and binding  obligations  of
Seller, enforceable against Seller in accordance with their respective terms.

         4.03 Conflicts:  Defaults. The execution and delivery of this Agreement
and  the  other  agreements  and  instruments  executed  or  to be  executed  in
connection  herewith  by Seller  do not,  and the  performance  by Seller of its
obligations  hereunder  and  thereunder  and the  consummation  by Seller of the
transactions  contemplated  hereby or thereby,  will not (i)  violate,  conflict
with,  or  constitute  a breach or  default  under any of the terms of  Seller's
Articles of Incorporation or Bylaws,  or except for the Required  Consents,  any
Permit,  patent,  trademark,  copyright or other intellectual  property right of
Seller,  Warranties,  Documentary  Information,  Acquired  Contract  or Personal
Property  Lease or any other  obligation  under or with  respect to the Acquired
Assets,  (ii) result in the creation or  imposition of any Liens in favor of any
third party upon any of the Acquired  Assets or the  Business,  (iii) violate or
require  any   authorization,   approval,   consent  or  other   action  by,  or
registration,  declaration  or  filing  with  or  notice  to,  any  Governmental
Authority pursuant to any law, statute,  judgment,  decree,  injunction,  order,
writ, rule or regulation of any Governmental Authority affecting the Business or
the Acquired Assets; or (iv) except as set forth on Schedule 4.03, conflict with
or result in a breach of,  create an event of default (or event  that,  with the
giving of notice or lapse of time or both, would constitute an event of default)
under, or give any third party the right to terminate,  cancel or accelerate any
obligation under, any contract, agreement, note, bond, guarantee, deed of trust,
loan  agreement,   mortgage,  license,  lease,  indenture,   instrument,  order,
arbitration  award,  judgment  or decree to which  Seller is a party or by which
Seller or any of its  assets or  properties  are bound or  affected,  including,
without  limitation,  the Acquired  Assets.  There is no pending or, to the best
knowledge of Seller , threatened  action,  suit, claim,  proceeding,  inquiry or
investigation before or by any Governmental Authority,  involving or to restrain
or prevent the consummation of the  transactions  contemplated by this Agreement
or that might reasonably be expected to affect the right of Purchaser to acquire
or own the Acquired  Assets or the right of Purchaser to operate the Business in
substantially the manner in which it currently is operated.

         4.04 Absence of Undisclosed Information.  The Business and the Acquired
Assets are not  subject to (i) any  liabilities  or  obligations  of any nature,
fixed or contingent,  or any facts that might give rise to any such  liabilities
or obligations,  which would materially adversely affect the business,  business
prospects, assets, financial condition or results of operations of the Business,
or (ii) to the best  knowledge  of Seller,  any  liabilities  or adverse  claims
against or relating to the Acquired Assets or the Business.



<PAGE>


         4.05  Financial  Statements.  (a) Seller has  heretofore  delivered  to
Purchaser  true and correct copies of the Seller's  audited  balance sheet as at
November 30, 1997, and related  statements of operations,  retained earnings and
cash flows for the twelve month period ending  November 30, 1997,  together with
the notes relating thereto (collectively,  the "Audited Financial  Statements").
The Audited Financial Statements:  (A) have been prepared in accordance with the
books and records of Seller; (B) have been prepared in accordance with generally
accepting  accounting  principles  consistently  applied with Seller's financial
statements  for its  business;  (C) reflect and provide  adequate  reserves  and
disclosures  in respect of all  liabilities of the Business,  including  without
limitation,  all contingent  liabilities,  as of November 30, 1997 to the extent
required by generally accepted accounting  principles  consistently applied; and
(D) present fairly the financial  condition of the Business at such date and the
results of operations and cash flows of the Business for the period then ended.

          (b) Seller has  heretofore  delivered  to  Purchaser  true and correct
copies of the  Seller's  unaudited  balance  sheet as at August  31,  1998,  and
related statements of operations,  retained earnings and cash flows for the nine
month period ending August 31, 1998,  together with the notes  relating  thereto
(collectively,  the "Unaudited Financial  Statements").  The Unaudited Financial
Statements:  (A) have been prepared in accordance  with the books and records of
Seller; (B) have been prepared in accordance with generally accepting accounting
principles  consistently  applied with  Seller's  financial  statements  for its
business;  (C) reflect and provide adequate  reserves and disclosures in respect
of all liabilities of the Business, including without limitation, all contingent
liabilities,  as of August 31, 1998 to the extent required by generally accepted
accounting principles consistently applied; and (D) present fairly the financial
condition  of the Business at such date and the results of  operations  and cash
flows of the Business for the period then ended.

         (c) Seller has  heretofore  delivered  to  Purchaser  true and  correct
copies of the  Seller's  unaudited  balance  sheet as at October 31,  1998,  and
related  statements  of  operations,  retained  earnings  and cash flows for the
eleven month period ending  October 31, 1998,  together with the notes  relating
thereto  with respect to Seller's  Rental  Division  (collectively,  the "Rental
Division Financial Statements").  The Rental Division Financial Statements:  (A)
have been prepared in accordance with the books and records of Seller;  (B) have
been prepared in  accordance  with  generally  accepting  accounting  principles
consistently applied with Seller's financial statements for the Rental Division;
(C) reflect and provide  adequate  reserves  and  disclosures  in respect of all
liabilities of the Rental Division, including without limitation, all contingent
liabilities, as of October 31, 1998 to the extent required by generally accepted
accounting principles consistently applied; and (D) present fairly the financial
condition of the Rental  Division at such date and the results of operations and
cash flows of the Rental Division for the period then ended.



<PAGE>


         4.06 Adequacy of Acquired Assets.  Seller has good and marketable title
to all of the  Acquired  Assets and the  Acquired  Assets  are, or will be, upon
consummation of the  transactions  contemplated by this Agreement on the Closing
Date,  free and clear of all Liens.  The Acquired  Assets include all assets and
properties of Seller of every kind and description,  personal or mixed, tangible
or intangible,  the use of which is reasonably  necessary to enable Purchaser to
conduct the Business as it has been conducted by Seller prior to the date hereof
and  all  such  property  is in  good  operating  condition  and in a  state  of
reasonable  maintenance and repair.  There are no unpaid liabilities,  claims or
obligations arising from the ownership,  use or operation of the Acquired Assets
or the Business which could give rise to any mechanic's,  materialman's or other
statutory lien against the Acquired Assets, or for which Purchaser could be held
responsible.  All  industrial  modular  cooling  towers  included  in the Rental
Equipment  are capable of  performing  at the  capacity  levels  defined in this
Section 4.06. For the purposes of defining capacity,  one (1) nominal ton equals
fifteen  thousand  (15,000)  British  Thermal Units (BTU) per hour.  The modular
cooling  tower rental fleet units are  constructed  in 6'x6'  modules where each
module is rated with a capacity of one hundred (100) tons. For example,  a Model
360  measures 12' x 30' and  consists of 10-6'x6'  modules,  thus having a rated
capacity of one thousand  (1000) tons. This rated capacity is only applicable to
operating  conditions of 95(Degree) F Hot Water Temperature  (HWT),  85(Degree)F
Cold Water  Temperature  (CWT),  76(Degree)F  Wet Bulb (WB),  and 3 gallons  per
minute (gpm) per ton of water flow rate.  The charts set forth on Schedule  4.06
shall be used to verify capacity where capacity multiples for altitude, wet bulb
and entering water temperatures vary from the above conditions.

         4.07 Personal Property Leases.  Schedule 1.01(d) to this Agreement sets
forth as of the date of this  Agreement  a list and  brief  description  of each
lease or other  agreement or right,  whether  written or oral (including in each
case the rental,  the  expiration  date thereof and a brief  description  of the
property  covered),  under which  Seller is lessee of, or holds or operates  any
machinery,  equipment,  vehicle or other tangible  personal  property owned by a
third party and used in  connection  with the  Business.  All personal  property
leases to which Seller is a party either as lessor or lessee with respect to the
Acquired Assets are valid and  enforceable in accordance  with their  respective
terms,  and there is not under any of such leases any material breach or default
on the part of Seller or, to the  knowledge of Seller,  on the part of any other
party  thereto,  or any  condition  or event that,  with the giving of notice or
lapse of time or both, would constitute such a material breach or default on the
part of Seller or, to the  knowledge  of Seller,  on the part of any other party
thereto.

         4.08  Intellectual  Property.  (i) Schedule 4.08 to this Agreement sets
forth a true and  accurate  description  of all  intellectual  property  and all
registrations  and applications for any of the foregoing owned or used by Seller
in connection with the conduct of the Business (the "Intellectual Property").
                  (ii) Seller is the owner of all right,  title and  interest in
         and to the  Intellectual  Property  free  and  clear of all  Liens  and
         without  obligation to make any royalty,  license or other payment with
         respect thereto, including, without limitation, any royalty, license or
         other  payment  resulting  from any  infringement  of any  third  party
         rights.

                  (iii) There have not been any  claims,  actions or judicial or
         other adversary proceedings involving Seller concerning any item of the
         Intellectual  Property;  there  is no  basis  for any  such  action  or
         proceeding;  and to the best  knowledge  of  Seller  no such  action or
         proceeding is threatened.

         4.09 Contracts and Commitments. Except as set forth in Schedule 4.09 to
this  Agreement,  Seller is not,  with  respect to the  Business or the Acquired
Assets, a party to any written or oral:

                  (i)  contract  not made in the  ordinary  course of  business,
         other than this Agreement, under which the total outstanding obligation
         is in excess of Ten Thousand Dollars ($10,000.00);




<PAGE>


                  (ii)  consulting  agreement or contract for the  employment of
         any,  employee or other person on a full-time,  part-time or consulting
         basis that is not  terminable  upon  notice of thirty (30) days or less
         without cost or other liability resulting solely from such termination;

                  (iii) agreement relating to the lease of any property, real or
         personal,  whether as lessor or lessee that involves future obligations
         of more than Ten Thousand Dollars ($10,000.00);

                  (iv)  contract  for the  purchase or sale of real  property or
         capital or fixed assets that involves  future  obligations of more than
         Ten Thousand Dollars ($10,000.00); or

                  (v) contracts and other agreements  containing covenants under
         which the  Business may not compete in any line of business or with any
         person in any geographic area.

Except as set forth in Schedule 4.09 to this Agreement,  Seller is not in breach
of or in default  under any of the  contracts,  agreements or  arrangements  set
forth in Schedule 4.09 to this  Agreement,  and no event has occurred that, with
the giving of notice or lapse of time or both, would constitute such a breach or
default.  True and complete copies of such contracts,  agreements or instruments
have been delivered to Purchaser.

         4.10 Inventory. Except as set forth in Schedule 4.10 to this Agreement,
Seller has good title to all inventory included in the Acquired Assets, free and
clear of all Liens.  The  inventory  is adequate for the conduct of the Business
and contains no items of obsolete  inventory,  and  inventory  levels are not in
excess of the normal  operating  requirements  of the  Business in the  ordinary
course of business consistent with past practices.

         4.11  Customers and  Suppliers.  Except as set forth on Schedule  4.11,
Seller is not involved in any material  controversy with any of the customers or
suppliers of the Business.  Schedule 4.11 to this Agreement  lists all customers
or  suppliers  which,  during the twelve (12)  months  ended  October 31,  1998,
accounted  for  five  percent  (5%) or more of the  purchases  or  sales  of the
materials,  products,  supplies,  equipment or parts used in connection with the
Business or five percent (5%) or more of the revenues of the Business.

         4.12  Compliance  with Law.  Seller is in compliance  with all federal,
state,  local or foreign laws,  statutes,  ordinances,  regulations,  orders and
other  requirements of Governmental  Authorities  having  jurisdiction  over the
Acquired Assets or the conduct of the Business.



<PAGE>


         4.13  Compliance  with  Permits.  Schedule  1.01(f)  to this  Agreement
contains a true,  correct  and  complete  list of all  Permits  issued to Seller
relating  exclusively to the Business or any Acquired Asset currently used by it
in the  operation of the  Business.  Such  Permits  constitute  all  franchises,
licenses,  permits,  certificates and other authorizations from any Governmental
Authorities that are necessary for the conduct of the Business. All such Permits
are in full force and effect, no violations are or have been recorded in respect
of any of the Permits  (except  those which have been remedied and no proceeding
is pending or, to the best knowledge of Seller,  threatened to revoke,  withdraw
or limit any such Permit and to the best knowledge of Seller,  there is no fact,
error or admission relevant to any such Permit that would permit the revocation,
withdrawal or limitation or result in the threatened  revocation,  withdrawal or
limitation of any such Permit.

         4.14  Litigation.  There is no  pending  or, to the best  knowledge  of
Seller, threatened litigation,  action, suit, proceeding,  claim, investigation,
or  administrative  proceeding  against or  affecting  Seller,  by or before any
Governmental  Authority,  involving  or relating to the Business or the Acquired
Assets.

         4.15  Taxes.  (i) Seller has,  or by the  Closing  Date will have,  (A)
timely  filed all Tax (as defined in clause (v) of this Section  4.15)  returns,
schedules and declarations  (including any withholding and information  returns)
required to be filed by any jurisdiction to which it is or has been subject, all
of which Tax returns,  schedules and  declarations  are or will,  when filed, be
true, complete,  accurate and correct in all material respects, (B) paid in full
all Taxes due and  payable  (or  claimed to be due and  payable by any  federal,
state, local or foreign Taxing  authority),  (C) paid or finally settled all Tax
deficiencies  asserted or assessed  against it, and (D) made timely  payments to
the proper  Governmental  Authorities  of the Taxes  required to be deducted and
withheld from the wages paid to its employees.

                  (ii) Seller (A) is not  delinquent  in the payment of any Tax,
         (B) has not been  granted an  extension  of time to file any Tax return
         prior to or on the Closing Date which has expired,  or will expire,  on
         or before the Closing Date without such return  having been filed,  and
         (C) has not  granted to any other  person or entity a power of attorney
         or  similar  authorization  with  respect  to  the  settlement  of  its
         liability for Taxes.

                  (iii) No deficiencies  for any Tax has been claimed,  proposed
         or  assessed  (whether  or not  finally  or  tentatively,  orally or in
         writing),  no requests for waivers of the time to assess any deficiency
         for any Taxes are pending,  and there are no pending or threatened  Tax
         audits,  investigations or claims for or relating to (A) the assessment
         or collection of Taxes,  or (B) a claim for refund made with respect to
         Taxes previously paid. There are no matters under discussion or dispute
         with any  Governmental  Authorities with respect to Taxes that may have
         been raised, nor are there any issues Seller believes will be raised in
         the future,  by any Taxing  authority with respect to Taxes accruing on
         or prior to the Closing Date.

                  (iv) There are,  and as of the Closing  Date there will be, no
         Liens for Taxes upon the Acquired Assets except for statutory Liens for
         Taxes  not yet due or  delinquent.  Purchaser  will  take  title to the
         Assets free and clear of any such Liens.



<PAGE>


                  (v) As used in this  Agreement,  "Taxes" (and all  derivations
         thereof)  means all  federal,  state,  local and  foreign  sales,  use,
         property, payroll and other taxes imposed by any Governmental Authority
         with  respect  to the  ownership,  operation,  transfer,  or use of the
         Business or the  Acquired  Assets,  or in any other way relating to the
         Business or the Acquired Assets.

         4.16  Employee  Agreements.  Schedule 4.16 contains a list of the names
and current aggregate annual cash compensation and identifies the other material
benefits  of  each  employee  of the  Business  and  any  employment  contracts,
confidentiality agreements or non-compete agreements to which Seller is a party.
Except as set forth on Schedule 4.16 to this Agreement,  no labor  organization,
collective bargaining  representative or group represents or claims to represent
any of the Business' present employees.

         4.17  Place  of  Property.  Seller  represents  that  all of the  items
comprising the Acquired Assets (other than those Rental  Equipment items covered
by the  leases  listed on  Schedule  4.17) are  located  either at the  Seller's
facilities  located in Chickasha,  Oklahoma or in Oklahoma  City,  Oklahoma.  In
addition,  Seller  represents that all of the items covered by the leases listed
on Schedule  4.17 are located where  specified in such leases.  Seller shall not
remove  any of such  property  from such  locations  without  the prior  written
consent of the  Purchaser,  except as may be required in the ordinary  course of
the Business.

         4.18 Bulk Sales. The aggregate book value of the Rental Equipment, shop
equipment,  tools,  operating supplies,  and other personal property included in
the  Acquired  Assets on the date hereof is, and on the  Closing  Date shall be,
less  than  twenty-five  percent  (25%)  of  the  aggregate  book  value  of the
equipment, shop equipment, tools, operating supplies and other personal property
owned by Seller on each  such  date.  At least  fifty-one  percent  (51%) of the
aggregate book value of the Rental Equipment,  shop equipment,  tools, operating
supplies  and other  personal  property  owned by the  Seller  and  utilized  in
connection with the Business is located in Oklahoma.

         4.19 Brokers,  Finders and Agents. Seller is not directly or indirectly
obligated to anyone as a broker,  finder, agent or in any other similar capacity
in connection with this Agreement or the transactions contemplated hereby.

         4.20 Other Information.  The information provided and to be provided by
Seller  to  Purchaser  in this  Agreement  or in the  Schedules  or in any other
writing pursuant hereto (including,  without limitation, the representations and
warranties  contained  in this  Article  IV) does not and will not  contain  any
untrue  statement  of a material  fact and does not and will not omit to state a
material  fact  required to be stated herein or therein or necessary to make the
statements  contained herein or therein,  in light of the circumstances in which
they are made,  not false or  misleading.  Copies of all  financial  statements,
reports, documents and other materials heretofore or hereafter delivered or made
available to Purchaser  pursuant  hereto and thereto were or will be at the time
of their  delivery to  Purchaser  true,  complete  and  accurate  copies of such
financial statements, reports, documents and other materials.





<PAGE>


                                    ARTICLE V

                   REPRESENTATIONS AND WARRANTIES OF PURCHASER

         In  order  to  induce  Seller  to  enter  into  this  Agreement  and to
consummate the transactions contemplated hereby, the Purchaser hereby represents
and warrants as of the date hereof as follows:

         5.01 Organization and Good Standing: Power and Authority.  Purchaser is
a corporation  duly organized,  validly  existing and in good standing under the
laws of the State of Louisiana. Purchaser has full corporate power and authority
to execute and deliver this Agreement,  and to perform  Purchaser's  obligations
hereunder and to consummate the transactions  contemplated hereby.  Purchaser is
qualified to do business and is in good standing in each  jurisdiction  in which
the failure to so qualify would have a material adverse affect upon Purchaser.

         5.02 Corporate Authorization.  The execution,  delivery and performance
of  this  Agreement  and all  other  agreements  and  instruments  executed  and
delivered by  Purchaser  in  connection  herewith  and the  consummation  of the
transactions  contemplated  hereby  and  thereby  have  been  duly  and  validly
authorized by all  necessary  corporate  action on the part of  Purchaser.  This
Agreement has been, and the other  agreements and instruments to be executed and
delivered  by  Purchaser  in  connection  herewith  will be,  on or prior to the
Closing Date, duly executed and delivered by Purchaser, and constitute,  or upon
execution and delivery will constitute, the valid, legal and binding obligations
of Purchaser,  enforceable against Purchaser in accordance with their respective
terms.

         5.03 Conflicts;  Defaults. The execution and delivery of this Agreement
and  the  other  agreements  and  instruments  executed  or  to be  executed  in
connection herewith by Purchaser do not, and the performance by Purchaser of its
obligations  hereunder and thereunder and the  consummation  by Purchaser of the
transactions  contemplated  hereby or thereby,  will not (i)  violate,  conflict
with, or  constitute a breach or default  under any of the terms of  Purchaser's
Articles of Incorporation or Bylaws;  (ii) violate or require any authorization,
approval,  consent or other action by, or  registration,  declaration  or filing
with or notice to, any  Governmental  Authority  pursuant  to any law,  statute,
judgment,   decree,   injunction,   order,  writ,  rule  or  regulation  of  any
Governmental  Authority; or (iii) conflict with or result in a breach of, create
an event of default (or event  that,  with the giving of notice or lapse of time
or both,  would  constitute an event of default)  under, or give any third party
the right to terminate, cancel or accelerate any obligation under, any contract,
agreement,  note,  bond,  guarantee,  deed of trust,  loan agreement,  mortgage,
license, lease,  indenture,  instrument,  order,  arbitration award, judgment or
decree to which  Purchaser is a party or by which Purchaser or any of its assets
or  properties  are  bound or  affected.  There is no  pending  or,  to the best
knowledge of Purchaser,  threatened action, suit, claim, proceeding,  inquiry or
investigation  before  or  by  any  Governmental  Authorities,  involving  or to
restrain or prevent the  consummation of the  transactions  contemplated by this
Agreement or that might  reasonably be expected to affect the right of Purchaser
to purchase the Acquired Assets.




<PAGE>


         5.04  Brokers.  Finders  and  Agents.  Purchaser  is  not  directly  or
indirectly  obligated  to  anyone  as a  broker,  finder,  agent or in any other
similar   capacity  in  connection  with  this  Agreement  or  the  transactions
contemplated hereby.

                                   ARTICLE VI

                               COVENANTS OF SELLER

         Seller hereby covenants to Purchaser that:

         6.01 Access and  Information.  Seller  shall  afford to  Purchaser  and
Purchaser's  accountants,  counsel and other representatives full and reasonable
access from time to time during normal business hours throughout the period from
the date hereof until the Closing Date to Seller's properties, books, contracts,
commitments,  personnel  and records  relating to the  Business and the Acquired
Assets, and, during such period,  Seller will (or will cause its representatives
to)  furnish  to  Purchaser  and  Purchaser's  accountants,  counsel  and  other
representatives  copies  of  such  documents  and  all  such  other  information
concerning the Acquired Assets,  the Retained Assets,  the Assumed  Liabilities,
the Retained  Liabilities  and the  business,  properties  and  personnel of the
Business as Purchaser may reasonably request.

         6.02     Conduct of the Business Pending Closing.  Prior to the earlie
of the Closing or termination of this Agreement:
                  

                  (a) Ordinary Course of Business.  From the date hereof through
         the Closing Date,  Seller shall use all reasonable  efforts to preserve
         the business  organization of the Business intact, to keep available to
         the Business the services of all current  officers and employees and to
         preserve for  Purchaser  the goodwill of the  suppliers,  distributors,
         customers,  employees and others  having  business  relations  with the
         Business.

                  (b)  Operation of Business.  From the date hereof  through the
         Closing  Date,  except as  otherwise  permitted  by this  Agreement  or
         consented  to in  writing  by  Purchaser,  Seller  shall  continue  the
         operation of the Business in the ordinary  course and  consistent  with
         past practices,  and maintain the assets,  properties and rights of the
         Business  (including,  without  limitation,  the Acquired Assets) in at
         least as good order and condition as exists on the date hereof, subject
         to ordinary wear and tear.

                  (c)  Material  Contracts.  Seller  shall  not  enter  into any
         contract,  purchase  order or other  commitment  directly or indirectly
         affecting  the Acquired  Assets or the Business,  except  contracts and
         commitments  entered  into the ordinary  course of business  consistent
         with past  practices  that are  terminable  on no more than thirty (30)
         days notice  without  penalty or  obligation,  and that do not call for
         aggregate  payments by, or have an  estimated  cost of  performance  to
         Seller in excess of Five Thousand Dollars  ($5,000.00) under any single
         contract  or series or in the  aggregate  of Fifteen  Thousand  Dollars
         ($15,000.00) without the prior written consent of Purchaser.


<PAGE>


                  (d) Material Adverse Change.  Seller shall give prompt written
         notice (but not later than five (5) days after the occurrence  thereof)
         to  Purchaser  of any (i)  material  adverse  change  in the  business,
         business prospects, assets, financial condition or results of operation
         of the Business;  and (ii) change that would render any  representation
         or  warranty  made by  Seller  hereunder  untrue or  incomplete  in any
         material respect as of the date of such change.

                  (e) Compliance with  Representations  and Warranties.  Without
         limiting the foregoing,  except as otherwise expressly provided in this
         Agreement,  Seller  shall  not take any  action  or permit to occur any
         event,  directly or indirectly within the control of Seller, that would
         cause any  representation or warranty contained herein to be inaccurate
         or untrue on or before the Closing Date.

         6.03  Exclusivity.  From and after the date hereof to and including the
Closing Date, neither Seller nor any of its shareholders,  officers,  directors,
employees, or agents, shall, directly or indirectly, solicit, initiate or engage
in  or  continue  (including  without  limitation,  furnishing  any  information
concerning  the  Acquired  Assets or the  Business)  discussions,  inquiries  or
proposals,  or enter into any negotiations for the purpose or with the intention
of leading to any proposal,  concerning the acquisition or purchase by any other
party of the Seller,  the  Business or any part  thereof or any  Acquired  Asset
(except, in the later case, for the purchase of inventory in the ordinary course
of the Business).

                                   ARTICLE VII

                  ADDITIONAL AGREEMENTS OF SELLER AND PURCHASER

         7.01     Employee Matters.

                  (a) Employment.  Seller agrees to cooperate with Purchaser and
         give  Purchaser  access to employee  information  and  assistance  with
         employee   communications  in  connection  with  Purchaser's  potential
         employment of the current  employees of the Business.  Seller will also
         cooperate and assist  Purchaser in connection  with any  pre-employment
         screening,  interviewing,  physicals or drug  testing,  with respect to
         Seller's  employees,  that  Purchaser  desires to  conduct,  as well as
         distribution  of  communication  materials  and  enrollment  forms  for
         Purchaser's employee benefit plans.  However,  Purchaser shall be under
         no obligation to (i) hire any employees of the Business;  (ii) maintain
         any of  Seller's  employees  which it does  hire at the same  position,
         title,  or level or  responsibility  that they had with  Seller;  (iii)
         grant seniority or service credit to any such employee; or (iv) pay any
         specified level of compensation or benefits to any such employee.



<PAGE>


                  (b) Employment  Liabilities.  Purchaser  does not assume,  and
         Seller  hereby   retains,   any  and  all  employment   related  costs,
         obligations,  and  liabilities of the Business  incurred on or prior to
         Closing or which relate to events, occurrences, conditions, actions, or
         inactions  which  took  place or were in effect on or prior to  Closing
         (whether or not  reported,  filed,  billed,  or paid for on or prior to
         Closing),   including,  without  limitation,   costs,  obligations  and
         liabilities  relating to severance rights of employees of the Business,
         employment discrimination,  unfair labor practices, wage and hour laws,
         health  and   safety,   workers   compensation,   wrongful   discharge,
         compensation,  fringe  benefits,  insurance,  employee  benefit  plans,
         pensions, retiree medical, severance pay, vacations,  torts, accidents,
         disabilities,  injuries,  sickness,  exposure  to  harmful  conditions,
         breach of oral or written employment contracts or collective bargaining
         agreements, or breach of law, statute,  judgment,  decree,  injunction,
         order,  writ,  rule or regulation of any  Governmental  Authority.  The
         entire liability for continuing acts or conditions (such as exposure to
         harmful  conditions or continuing  discrimination)  shall be assumed by
         Seller if any material  portion of the act or condition  occurred on or
         prior to Closing.

                  (c) COBRA.  Purchaser does not assume, and Seller agrees to be
         solely responsible for, any and all liabilities relating to health care
         continuation   coverage   under   the   Consolidated   Omnibus   Budget
         Reconciliation  Act of 1985, as amended  ("COBRA")  which relate to, or
         arise out of or in  connection  with,  this  transaction  or the events
         contemplated by this Agreement.

         7.02 Product  Warranties.  Seller warrants that each item  constituting
part of the Rental Equipment conforms to the statements appearing on containers,
labels and in Seller's technical literature.  Seller agrees that Purchaser shall
be entitled to Seller's warranties as described on Schedule 7.02 with respect to
each item constituting part of the Rental Equipment.

         7.03 Storage of Rental  Equipment.  Seller hereby grants  Purchaser the
right to store some or all of the  Rental  Equipment  on  Seller's  premises  in
Oklahoma  City,  Oklahoma  for a period of up to one (1) year after the  Closing
Date,  at a  nominal  cost to  Purchaser  , in  accordance  with the Land  Lease
Agreement  (herein so  called)  in  substantially  the form  attached  hereto as
Exhibit F, to be executed by Seller and Purchaser at Closing.

         7.04  Office  Lease.  Seller  hereby  authorizes  Purchaser  to utilize
certain office space of Seller,  in accordance  with the Office Lease  Agreement
(herein so called) in substantially the form attached hereto as Exhibit G, to be
executed by Seller and Purchaser at Closing.

                                  ARTICLE VIII

                              CONDITIONS OF CLOSING

         8.01 Obligation of Purchaser. The obligation of Purchaser to consummate
the purchase  contemplated  by the provisions of this Agreement shall be subject
to the  fulfillment on or prior to the Closing Date of the following  conditions
(any of which may be waived in writing, in whole or in part, by Purchaser):




<PAGE>


                  (a)   Representations   and   Warranties;   Performance.   The
         representations  and  warranties of Seller set forth in this  Agreement
         shall be true,  correct and  complete as of the Closing Date (as though
         such  representations  and warranties  were made anew at and as of such
         date)  except with respect to the effect of  transactions  specifically
         permitted by the  provisions of this  Agreement,  and Seller shall have
         duly  performed in all material  respects all  agreements and covenants
         herein  required  to be  performed  by Seller on or before the  Closing
         Date.

                  (b)  Officer's  Certificates.   Seller  shall  have  furnished
         Purchaser  with a  certificate,  executed on behalf of Seller by one of
         its  executive  officers  and dated the Closing  Date,  confirming  the
         matters expressed in Section 8.01(a) hereof.

                  (c) Certificate of Authorities. Seller shall have furnished to
         Purchaser (i) certificates of the Secretary of State of Oklahoma, dated
         as of a date nor more than five (5) business  days prior to the Closing
         Date, attesting to the organization and good standing of Seller, (ii) a
         copy certified by the Secretary of State of Oklahoma,  as of a date not
         more,  than  five (5)  business  days  prior to the  Closing  Date,  of
         Seller's Articles of Incorporation and all amendments thereto,  (iii) a
         copy certified by the Secretary of Seller,  of the Bylaws of Seller, as
         amended  and in  effect  as of  the  Closing  Date,  and  (iv) a  copy,
         certified by the Secretary of Seller,  of  resolutions  duly adopted by
         the Board of  Directors  of Seller duly  authorizing  the  transactions
         contemplated in this Agreement.

                  (d) Consents and Approvals.  All material consents,  approvals
         and novations, on terms satisfactory to Purchaser, of third parties and
         Governmental Authorities (including,  without limitation,  the Required
         Consents)  that shall be (i) required to  consummate  the  transactions
         contemplated hereby or (ii) reasonably necessary to permit Purchaser to
         operate the Business, shall have been obtained.

                  (e)      Transfer  Documents.   Purchaser  shall have received
         the Transfer  Documents as contemplated in Section 3.02 hereof.

                  (f)  Receipt  of  Opinion  of  Counsel.  Purchaser  shall have
         received  an  opinion,  dated as of the  Closing  Date,  of  counsel to
         Seller, in substantially the form attached hereto as Exhibit H.

                  (g)      Noncompetition  Agreement.    Purchaser  shall   have
         received the Noncompetition Agreement executed by Seller and  Harold D.
         Curtis.

                  (h)      License Agreement.  Purchaser shall have received the
         License Agreement executed by Seller.

                  (i) Supply Agreement. Purchaser shall have received the Supply
Agreement executed by Seller.


<PAGE>


                  (j) Land Lease  Agreement.  Purchaser  shall have received the
Land Lease Agreement executed by Seller.

                  (k) Office Agreement. Purchaser shall have received the Office
Lease Agreement executed by Seller.

                  (l) Rental  Equipment.  The Rental Equipment shall consist of,
         among other items,  (i) a minimum of one hundred and sixty-seven  (167)
         cooling towers with an aggregate  minimum rated capacity of one hundred
         twenty-five  thousand  four  hundred  and fifty  (125,450)  tons,  (ii)
         fifty-seven (57) pumps,  (iii) thirty-two (32) electrical  distribution
         panels,  (iv)  four  (4)  heat  exchangers,  (v)  one  (1)  centrifugal
         separator and (vi) one (1) fre-dox unit.

         8.02  Obligation of Seller.  The obligation of Seller to consummate the
sale  contemplated  by the provisions of this Agreement  shall be subject to the
fulfillment on or prior to the Closing Date of the following  conditions (any of
which may be waived in writing, in whole or in part, by Seller):

                  (a)   Representations   and   Warranties;   Performance.   The
         representations and warranties of Purchaser set forth in this Agreement
         shall be true,  correct and  complete as of the Closing Date (as though
         such  representations  and warranties  were made anew at and as of such
         date)  except with respect to the effect of  transactions  specifically
         permitted by the provisions of this Agreement, and Purchaser shall have
         duly  performed in all material  respects all  agreements and covenants
         herein  required to be  performed by Purchaser on or before the Closing
         Date.

                  (b) Officer's  Certificates.  Purchaser  shall have  furnished
         Seller with a  certificate,  executed on behalf of  Purchaser by one of
         its  executive  officers  and dated the Closing  Date,  confirming  the
         matters expressed in Section 8.02(a) hereof.

                  (c) Certificate of Authorities. Purchaser shall have furnished
         to Seller (i)  certificates  of the  Secretary  of State of  Louisiana,
         dated as of a date nor more than five (5)  business  days  prior to the
         Closing  Date,  attesting  to the  organization  and good  standing  of
         Purchaser,  (ii)  a  copy  certified  by  the  Secretary  of  State  of
         Louisiana,  as of a date not more, than five (5) business days prior to
         the Closing  Date, of  Purchaser's  Articles of  Incorporation  and all
         amendments  thereto,  (iii)  a  copy  certified  by  the  Secretary  of
         Purchaser,  of the Bylaws of Purchaser,  as amended and in effect as of
         the  Closing  Date,  and (iv) a copy,  certified  by the  Secretary  of
         Purchaser,  of  resolutions  duly  adopted by the Board of Directors of
         Purchaser  duly  authorizing  the  transactions  contemplated  in  this
         Agreement.

                  (d) Consents and Approvals.  All material consents,  approvals
         and novations,  on terms  satisfactory to Seller,  of third parties and
         Governmental Authorities (including,  without limitation,  the Required
         Consents)  that shall be (i) required to  consummate  the  transactions
         contemplated hereby or (ii) reasonably necessary to permit Purchaser to
         operate the Business, shall have been obtained.


<PAGE>


                  (e)  Assumption  Instrument.  Seller shall have  received from
         Purchaser the  Assumption  Instrument as  contemplated  by Section 3.03
         hereof.

                  (f) License Agreement.  Seller shall have received the License
Agreement executed by Purchaser.

                  (g) Supply  Agreement.  Seller shall have  received the Supply
Agreement executed by Purchaser.

                  (h) Land Lease Agreement.  Seller shall have received the Land
Lease Agreement executed by Purchaser.

                  (i) Office Lease  Agreement.  Seller  shall have  received the
Office Lease Agreement executed by Purchaser.

                  (j) Taxes,  Charges,  and Fees.  Seller  shall  have  received
         verification  from  Purchaser,  in form and substance  satisfactory  to
         Seller,  that  Purchaser  has paid,  or caused to be paid,  any  taxes,
         charges and fees  required to be paid by Purchaser  pursuant to Section
         3.05(a).

                                   ARTICLE IX

                            TERMINATION OF AGREEMENT

         9.01  Termination  of Agreement.  This  Agreement and the  transactions
contemplated  hereby may be terminated  and abandoned at any time on or prior to
the Closing as follows:

                  (a)      by the written consent of Purchaser and Seller;

                  (b) by  Purchaser,  (i) if there is or occurs an inaccuracy in
         any material  respect in the  representations  and warranties of Seller
         set forth in this Agreement,  which  inaccuracy is not capable of being
         cured by  December  18,  1998,  (ii) if there  has been a breach in any
         material respect of a covenant of Seller,  or a failure in any material
         respect on the part of Seller to comply with its obligations hereunder,
         and such  breach or failure is not  capable of being  cured by December
         18, 1998, or (iii) if any of the  conditions  set forth in Section 8.01
         hereof are not satisfied on or before December 18, 1998;

                  (c) by Seller,  (i) if there is or occurs an inaccuracy in any
         material respect in the representations and warranties of Purchaser set
         forth in this Agreement, which inaccuracy is not capable of being cured
         by December 18,  1998,  (ii) if there has been a breach in any material
         respect  on the  part of  Purchaser  to  comply  with  its  obligations
         hereunder,  and such breach or failure is not capable of being cured by
         December  18,  1998,  or (iii) if any of the  conditions  set  forth in
         Section 8.02 hereof are not  satisfied on or before  December 18, 1998;
         or


<PAGE>


                  (d) by  Purchaser or Seller if the Closing Date shall not have
         occurred  before  December  18,  1998,  for any  reason  other than the
         failure of the party seeking to terminate  this Agreement to perform in
         any  material  respect  its  obligations  hereunder  or the  breach  or
         inaccuracy in any material respect of a representation or warranty made
         by such party.

         9.02 Obligations Upon Termination.  Except for obligations  provided in
Section 11.02 hereof, in the event that this Agreement is terminated pursuant to
the provisions of Section 9.01(a) or (d) hereof, Seller shall have no obligation
to Purchaser and Purchaser shall have no obligation to Seller. In the event that
Seller or Purchaser shall  terminate this Agreement  pursuant to Section 9.01(b)
or (c) hereof,  respectively,  the right of Purchaser or Seller, as the case may
be, to pursue any and all rights it may have at law or equity or hereunder shall
survive unimpaired.

                                    ARTICLE X

                                 INDEMNIFICATION

         10.01  Indemnification  by Purchaser.  From and after the Closing Date,
Purchaser shall indemnify,  defend and hold Seller harmless from and against and
reimburse Seller for any and all claims, losses, liabilities, damages, costs and
expenses   (including,   without   limitation,   reasonable   attorneys'   fees)
(collectively,  "Liabilities") that may be incurred by, imposed upon or asserted
against  Seller  arising  from:  (i) any failure of  Purchaser  to assume,  pay,
perform and discharge the Assumed Liabilities;  (ii) any action, claim, judicial
or other  proceeding  asserted by any third party against Seller with respect to
any of the Assumed  Liabilities;  and (iii) any  inaccuracy  in or breach of any
representation,   warranty,  covenant,  obligation  or  agreement  of  Purchaser
contained herein or in any document or instrument delivered pursuant hereto.

         10.02  Indemnification  by Seller . From and after  the  Closing  Date,
Seller shall indemnify,  defend and hold Purchaser harmless from and against and
reimburse Purchaser for any and all Liabilities that may be incurred by, imposed
upon or asserted against  Purchaser arising from or relating to: (i) any failure
of Seller to assume, pay, perform and discharge the Retained  Liabilities;  (ii)
any  action,  claim,  judicial or other  proceeding  asserted by any third party
against  Purchaser  with respect to any of the Retained  Liabilities;  (iii) any
inaccuracy in or breach of any representation, warranty, covenant, obligation or
agreement of Seller contained herein, or in any document or instrument delivered
pursuant  hereto;  (iv) the operation of the Business or the  ownership,  use or
sale of the  Acquired  Assets by Seller  prior to the Closing  Date  (including,
without  limitation,  any contractual,  tax,  product,  warranty,  tort or other
Liability  whatsoever);  and (v) any  failure of Seller to comply  with any bulk
sales laws, bulk transfer laws or similar laws of any applicable jurisdiction in
connection with the transactions  contemplated by this Agreement.  Purchaser may
withhold from Seller any payment otherwise due to Seller pursuant to the Note in
accordance  with  the  provisions  of  Section  10.05  hereof.  Upon  the  final
determination of any claim for indemnification  hereunder,  Purchaser may offset
the full  amount of such  claim for  indemnification  against  the amount due to
Seller pursuant to the Note in accordance with Section 10.05 hereof.




<PAGE>


         10.03  Notification of Claim. Each indemnified party under this Article
X will promptly, and within ten (10) days after notice to such indemnified party
of any  claim as to which it  asserts a claim for  indemnification,  notify  the
indemnifying party of such claim and the amount thereof; provided, however, that
the failure to give such notification  shall not relieve the indemnifying  party
from any liability  which it may have pursuant to the provisions of this Article
X as long as the failure to give such notice within such time is not prejudicial
to the indemnifying party. Notice to an indemnified party for the purpose of the
preceding  sentence  shall mean the filing of any legal  action,  receipt of any
claim in writing or similar form of actual notice.

         10.04  Defense  of  Claim.  If any  claim  for  indemnification  by any
indemnified  party arises out of a claim by a person other than such indemnified
party, the indemnifying  party may, by written notice to the indemnified  party,
undertake to conduct any proceedings or negotiations in connection  therewith or
necessary  to  defend  the  indemnified  party  and  take  all  other  steps  or
proceedings to settle or contest such claim, including,  but not limited to, the
employment of counsel;  provided,  however,  that the  indemnifying  party shall
reasonably  consider the advice of the  indemnified  party as to the defense and
settlement  of such  claim and the  indemnified  party  shall  have the right to
participate, at its own expense, in such defense, but control of such litigation
and settlement shall remain with the indemnifying  party. The indemnified  party
shall provide all reasonable  cooperation in connection with any such defense by
the indemnifying party.  Counsel and auditor fees, filing fees and court fees of
all  proceedings,  contests or lawsuits  with respect to any such claim shall be
borne by the  indemnifying  party.  If any such claim is made  hereunder and the
indemnifying party elects not to undertake the defense thereof by written notice
to  the  indemnified   party,  the  indemnified   party  shall  be  entitled  to
indemnification with respect thereto pursuant to the terms of this Article X. To
the extent that the  indemnifying  party undertakes the defense of such claim by
written notice to the indemnified  party and diligently  pursues such defense at
its  expense,  the  indemnified  party  shall  be  entitled  to  indemnification
hereunder only to the extent that such defense is  unsuccessful as determined by
a  final  judgment  of  a  court  of  competent  jurisdiction,   or  by  written
acknowledgment  of the parties.  If any claim for  indemnification  by Purchaser
arises  out of a claim  by  Purchaser,  then  Purchaser  shall  be  entitled  to
immediate indemnification hereunder pursuant to Section 10.05 hereof.

         10.05 Offset.  In the event that Purchaser  shall exercise its right to
offset  provided in Section 10.02 any such offset shall be collected by reducing
the amount owed by Purchaser to Seller in the following manner (i) first, to the
extent of the principal amount  outstanding on the Note, then (ii) to the extent
of any accrued interest on the Note.

                                   ARTICLE XI

                                  MISCELLANEOUS



<PAGE>


         11.01 Survival of Representations  and Warranties.  All representations
and warranties  contained in this  Agreement,  any Exhibit of Schedule hereto or
any  certificate,  agreement  or  document  delivered  in  connection  with  the
transactions   contemplated   hereby  shall  survive  the  consummation  of  the
transactions contemplated by this Agreement and any investigation on the part of
the parties hereto and shall continue in full force and effect after the Closing
for a period of two (2) years  from the  Closing  Date at which  time they shall
expire and Seller shall no longer be liable with respect  thereto,  except as to
claims made in respect  thereof in writing by Purchaser or any other  indemnitee
on or before the expiration of such two-year period; provided, however, that the
representations  and warranties  contained in Sections 4.06, 4.12 and 4.15 shall
survive  indefinitely.  The covenants and  agreements of the parties  hereto set
forth  in  this  Agreement  shall  not  be  affected  by the  expiration  of any
representation  or warranty  pursuant to this  Section  11.01 and shall  survive
indefinitely.

         11.02 Expenses.  Regardless of whether the transactions contemplated by
this  Agreement are  consummated,  each of the parties hereto shall pay the fees
and expenses of its own counsel,  accountants or other experts, and all expenses
incurred by such party  incident  to the  negotiation,  preparation,  execution,
consummation,   and   performance  of  this   Agreement  and  the   transactions
contemplated hereby.

         11.03 Notices.  All notices,  requests and other  communications  under
this Agreement shall be in writing  (including a writing  delivered by facsimile
transmission)  and  shall  be  deemed  to have  been  duly  given  if  delivered
personally,  or sent by either  certified or  registered  mail,  return  receipt
requested, postage prepaid, by overnight courier guaranteeing next day delivery,
or by facsimile, addressed as follows:

         (a)      If to Seller :

                  Tower Tech, Inc.
                  11935 South I-44 Service Road.
                  P.O. 1838
                  Oklahoma City, OK 73173
                  Attn: Harold D. Curtis, Chief Executive Officer
                  Facsimile: (405) 979-2131

                  With a required copy to:

                  Holloway, Dobson, Hudson, Bachman,
                  Alden, Jennings & Holloway, P.C.
                  One Leadership Square, Suite 900
                  211 N. Robinson
                  Oklahoma City, Oklahoma 73102
                  Attn: B. Wayne Dabney
                  Facsimile No.: (405) 235-1707

or at such other address or facsimile number as Seller may have advised
Purchaser in writing; and





<PAGE>


         (b)      If to Purchaser:

                  Aggreko Inc.
                  4607 W. Admiral Doyle Drive
                  New Iberia, LA 70560
                  Attn: Terry Dressel, Vice President Finance
                  Facsimile No.: (318) 367-0870

         With a required copy to:

                  Henry, Meier & Jones, L.L.P.
                  1700 Pacific Avenue, Suite 2700
                  Dallas, Texas 75201
                  Attn: William W. Meier, III
                  Facsimile: (214) 954-9701

or at such other  address or  facsimile  number as  Purchaser  may have  advised
Seller in writing.

All such notices, requests and other communications shall be deemed to have been
received on the date of delivery thereof, if delivered by hand, on the third day
after the mailing thereof, if mailed, on the next day after the sending thereof,
if by overnight courier, and when receipt is acknowledged, if faxed.

         11.04 Waivers and  Amendments.  No amendment or waiver of any provision
of this Agreement,  nor consent to any departure  therefrom,  shall be effective
unless the same be in writing  and  signed by each party  hereto,  and then such
waiver or consent shall be effective  only in the specific  instance and for the
specific  purpose for which given. No failure on the part of any party hereto to
exercise,  and no delay in exercising,  any right  hereunder  shall operate as a
waiver thereof;  nor shall any single or partial exercise of any right hereunder
preclude  any other or further  exercise  thereof or the  exercise  of any other
right. The remedies  provided in this Agreement are cumulative and not exclusive
of any remedies provided by law.

         11.05 Binding Effect. This Agreement shall be binding upon and inure to
the  benefit  of the  parties  hereto  and their  respective  successors,  legal
representatives,  heirs and  assigns.  No party  hereto  shall assign any of its
rights hereunder or any interest herein without the prior written consent of the
other parties hereto.

         11.06  Exhibits and  Schedules.  The Exhibits  and  Schedules  attached
hereto or referred to herein are incorporated  herein and made a part hereof for
all  purposes.  As used  herein,  the  expression  "this  Agreement"  means this
document and such Exhibits and Schedules.

         11.07 Governing Law. THIS AGREEMENT,  AND THE RIGHTS AND OBLIGATIONS OF
THE  PARTIES  HERETO,  SHALL  BE  GOVERNED  BY AND  CONSTRUED  AND  ENFORCED  IN
ACCORDANCE  WITH THE SUBSTANTIVE  LAWS OF THE STATE OF TEXAS,  WITHOUT REGARD TO
ITS PRINCIPLES OF CONFLICT OF LAWS.


<PAGE>


         11.08 Arbitration.  The parties shall use their respective best efforts
to settle amicably any disputes,  differences or  controversies  arising between
the  parties  out of or in  connection  with or in  respect  of this  Agreement.
However,  if not so settled then the same shall be submitted to arbitration  and
to the  fullest  extent  permitted  by law,  be solely  and  finally  settled by
arbitration, except as specifically provided otherwise in any agreement attached
as an Exhibit hereto. The arbitration proceeding shall be held in Dallas, Texas,
and shall be conducted in accordance  with the commercial  arbitration  rules of
the  American  Arbitration  Association  and  to  the  extent  not  inconsistent
therewith, the Texas General Arbitration Act, Title 10, Vernon's Ann. Civ. Stat.
Judgement upon the award rendered by the arbitrators may be entered in any court
having  jurisdiction,  or  application  may be made to such court for a judicial
acceptance of the award and any order of enforcement as the case may be.

         11.09 Number and Gender.  Whenever  herein the singular number is used,
the same shall  include the plural  where  appropriate,  and words of any gender
shall include each other gender where appropriate.

         11.10 Captions.  The captions,  headings and arrangements  used in this
Agreement  are for  convenience  only  and do not in any way  affect,  limit  or
amplify the provisions hereof.

         11.11 Invalid Provisions. If any provision of this Agreement is held to
be illegal,  invalid or  unenforceable  under  present or future laws  effective
during the term hereof, such provision shall be fully severable;  this Agreement
shall be construed  and enforced as if such  illegal,  invalid or  unenforceable
provision had never  comprised a part hereof;  and the  remaining  provisions of
this  Agreement  shall remain in full force and effect and shall not be affected
by the illegal,  invalid or  unenforceable  provision of its severance from this
Agreement.

         11.12 Entirety. This Agreement contains the agreement and understanding
among the parties with respect to the matters  addressed  herein and  supersedes
all  prior  representations,   inducements,  promises  or  agreements,  oral  or
otherwise, which are not embodied herein.

         11.13  Publicity.  Except  as  otherwise  required  by law,  until  the
existence of this Agreement is publicly  disclosed,  no party hereto shall issue
any press release or make any other public statement, in either case relating to
or  connected  with or arising out of this  Agreement  or the matters  contained
herein, without obtaining the prior written approval of the other parties to the
contents and the manner of presentation and publication thereof,  which approval
shall not be unreasonably withheld.



<PAGE>


         11.14  Attorneys'  Fees.  In the event that any  action or  proceeding,
including  arbitration,  is  commenced  by any party  hereto for the  purpose of
enforcing any provision of this Agreement, the party to such action,  proceeding
or  arbitration  may receive as part of any award,  judgment,  decision or other
resolution of such action,  proceeding or  arbitration  its costs and attorneys'
fees as determined by the person or body making such award,  judgment,  decision
or resolution.  Should any claim hereunder be settled short of the  commencement
of any such action or  proceeding,  including  arbitration,  the parties in such
settlement  shall be entitled to include as part of the damages  alleged to have
been  incurred   reasonable  costs  of  attorneys  or  other   professionals  in
investigation or counseling on such claim.

         11.15 Third Party Beneficiaries.  Nothing contained herein,  express or
implied,  is intended to confer upon any person or entity other than the parties
hereto and their  successors  in interest  and  permitted  assigns any rights or
remedies under or by reason of this Agreement.


<PAGE>


         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the date first written above.


PURCHASER:                              AGGREKO INC.

                                        By:ss/GEORGE P. WALKER
                                           ------------------------------------
                                           Printed Name: George P. Walker
                                           Title: Executive Vice President


                                         By ss/TERREL P. DRESSEL, JR.
                                            -----------------------------------
                                            Printed Name: Terrel P. Dressel, Jr.
Title: Vice President Finance


SELLER:                                   TOWER TECH, INC.


                                           By:ss/HAROLD D. CURTIS
                                              ---------------------------------
                                              Printed Name: Harold D. Curtis
                                              Title: Chief Executive Officer









<PAGE>



                                    EXHIBIT A

                                 PROMISSORY NOTE




<PAGE>



                                    EXHIBIT B

                              ASSUMPTION AGREEMENT



<PAGE>



                                    EXHIBIT C

                            NONCOMPETITION AGREEMENT



<PAGE>



                                    EXHIBIT D

                                LICENSE AGREEMENT



<PAGE>



                                    EXHIBIT E

                                SUPPLY AGREEMENT



<PAGE>



                                    EXHIBIT F

                              LAND LEASE AGREEMENT



<PAGE>



                                    EXHIBIT G

                             OFFICE LEASE AGREEMENT


<PAGE>



                                    EXHIBIT H

                                  LEGAL OPINION



<PAGE>



                                SCHEDULE 1.01(a)

                           Tangible Personal Property



                            See Attached Description



<PAGE>



                                SCHEDULE 1.01(c)

                             Third Party Warranties


                                 See Attachments


<PAGE>



                                SCHEDULE 1.01(d)

                            Personal Property Leases


                                      None


<PAGE>



                                SCHEDULE 1.01(e)

                               Acquired Contracts



                                 See Attachments


<PAGE>



                                SCHEDULE 1.01(f)

                              Permits and Approvals


                                      None


<PAGE>



                                  SCHEDULE 1.03

                                Required Consents


                                      None



<PAGE>



                                  SCHEDULE 2.02

                          Allocation of Purchase Price


                                 See Attachment


<PAGE>



                                  SCHEDULE 4.03

                Conflicts; Defaults - List of License Agreements



1.       License Agreement dated as of September 1, 1995 by  and  between  Tower
         Tech, Inc. and Shriram Cooling Towers Ltd.

2.       License  Agreement  dated as of December 29, 1995 by and between  Tower
         Tech,  Inc.  and Ilmed  Impianti  S.r.L.,  as amended  by that  certain
         License Extension and Amendment Agreement dated as of October 31, 1998.

3.       License Agreement dated as of [September 10, 1997] by and between Tower
         Tech, Inc. and Industrial Water Cooling (PTY) LTD.


<PAGE>



                                  SCHEDULE 4.06

                            Rental Equipment Capacity


                                 See Attachments



<PAGE>



                                  SCHEDULE 4.08

                              Intellectual Property


I.       PATENTS


Patents Issued:

     (1) United States.  U.S. Patent No. 5,143,657 (9/1/92,  FLUID DISTRIBUTOR):
U.S. Patent No. 5,152,458 (10/6/92, AUTOMATICALLY ADJUSTABLE FLUID DISTRIBUTOR);
U.S. Patent No.  5,227,095  (7/13/93,  MODULAR  COOLING TOWER);  U.S. Patent No.
5,457,849  (1/30/96,  PULTRUDED  COOLING TOWER  CONSTRUCTION);  U.S.  Patent No.
5,457,531 (1/30/96, DUAL LAYERED DRAINAGE COLLECTION SYSTEM).

     (2) Europe.  European  Patent No.  518,579 B1 (French  Patent No.  0518579,
German Patent No.  69204913.4,  Great Britain  Patent No.  0518579,  and Italian
Patent No. 0518579), all filed/issued 9/20/95 and directed to and resulting from
European Patent  Application No. 92305209.6 and corresponding to U.S. Patent No.
5,143,657 (9/1/92,  FLUID DISTRIBUTOR),  and U.S. Patent No. 5,152,458 (10/6/92,
AUTOMATICALLY ADJUSTABLE FLUID DISTRIBUTOR).

Patents Pending:

(1) Europe.  European Patent Application No. 93900675.5,  filed/issued  11/24/92
and  designating  the countries of Germany,  Great Britain,  France,  and Italy,
corresponding  to PCT  Application  No.  US92/10202  (11/24/92,  MODULAR COOLING
TOWER);  European Patent Application No. 95904756.4,  filed/issued  11/29/94 and
designating  the  countries  of  Germany,  Great  Britain,  France,  and  Italy,
corresponding to PCT Application No. US94/13618 (11/29/94, DUAL LAYERED DRAINAGE
COLLECTION SYSTEM).

(2) Patent  Cooperation  Treaty.  PCT Application  No.  US95/15650, filed/issued
11/30/95 and  corresponding  to U.S. Patent No. 5,545,356  (8/13/96,  INDUSTRIAL
COOLING TOWER/TILT-UP CONCRETE CONSTRUCTION METHOD).

(3) Australia. Australian Patent Application No. 13314/95, filed/issued 11/29/94
and  corresponding  to PCT Application No.  US94.13618  (11/29/94,  DUAL LAYERED
DRAINAGE COLLECTION SYSTEM).

(4) Brazil.  Brazilian Patent Application No. PI-9408229,  filed/issued 11/29/94
and  corresponding  to PCT Application No.  US94/13618  (11/29/94,  DUAL LAYERED
DRAINAGE COLLECTION SYSTEM).

(5) China. Chinese Patent Application No. 94-194834.X, filed/issued 11/29/94 and
corresponding to PCT Application No. US94/13618 (11/29/94, DUAL LAYERED DRAINAGE
COLLECTION SYSTEM).



<PAGE>



II.      TRADEMARKS






















III.     TOWER TECH TRADE NAMES

Core-Trex
Water Collection System
Variable-Flow Rotary Spray Nozzle
FulFill 2000
Modular Fan Shroud
SmarTTower
SmarTTower






<PAGE>



                                  SCHEDULE 4.09

                            Contracts and Commitments



1.       License Agreement dated as of September 1, 1995 by  and  between  Tower
         Tech, Inc. and Shriram Cooling Towers Ltd.

2.       License  Agreement  dated as of December 29, 1995 by and between  Tower
         Tech,  Inc.  and Ilmed  Impianti  S.r.L.,  as amended  by that  certain
         License Extension and Amendment Agreement dated as of October 31, 1998.

3.       License Agreement dated as of [September 10, 1997] by and between Tower
         Tech, Inc. and Industrial Water Cooling (PTY) LTD.



<PAGE>




                                  SCHEDULE 4.10

                                    Inventory


                                      None





<PAGE>



                                  SCHEDULE 4.11

                             Customers and Suppliers


                                 See Attachments




<PAGE>



                                  SCHEDULE 4.16


                               Employee Agreements




<PAGE>



                                  SCHEDULE 4.17

                                Place of Property

                                 See Attachments


<PAGE>



                                  SCHEDULE 7.02

                               Product Warranties

         Seller warrants for a period of one (1) year from the Closing Date that
cooling tower  workmanship and materials,  excluding defects in pigmentation and
cosmetic deterioration of pultruded or injection-molded  parts, shall be free of
defects  with  respect of any  materials  manufactured  by, and any  workmanship
performed by, Seller. Seller will replace or repair, at Seller's discretion, any
such defective  workmanship or defective  materials within thirty (30) days of a
valid warranty claim by Purchaser.

         Seller's warranty is subject to the following  conditions:  (a) For any
warranty  claim,  Seller must receive from Purchaser  within the warranty period
written notice  describing the defect or defects.  (b) Purchaser shall not have,
without  Seller's  written  permission,  attempted  to correct the  defect.  (c)
Purchaser  shall have operated and maintained  the equipment in accordance  with
Seller's published operating instructions.  (d) The defect has been caused after
the Closing  Date  solely by such things as  accident,  erosion,  corrosion,  an
abnormally corrosive or abrasive use environment,  normal wear and tear, or from
abuse or neglect. (e) All liability of Seller shall be limited, at Seller's sole
option,  to the repair and  replacement of defective parts and Seller shall have
no liability for  consequential or other damages or for  transportation  charges
relating to  repaired,  replaced or  defective  parts.  (f)This  warranty is not
transferable.   Seller  makes  no  warranty  for  any  materials  and  equipment
manufactured  by parties  other than Seller.  Benefits to Seller,  if any,  with
respect to materials and equipment manufactured by other parties, including, but
not limited to,  hardware,  fans, drift  eliminators  fill media,  float valves,
motors, basin heaters,  electrical  distribution and control panels, pumps, heat
exchangers,  water filtration equipment,  fan hubs, pipe and pipe fittings,  but
furnished to Seller, are hereby assigned to Purchaser.

         Seller's liability  hereunder is expressly limited as follows:  (a) The
warranties set forth above are  Purchaser's  exclusive  remedies  against Seller
with respect to the manufacture,  operation or performance of the cooling towers
and are in lieu of any other  warranties  or  guarantees,  express  or  implied,
including  the  warranties  of  merchantability  and  fitness  for a  particular
purpose.  (b) Seller  shall not be liable to  Purchaser  for any  consequential,
indirect or liquidated damages,  including,  but not limited to, loss of profits
or revenue,  loss of use of  equipment,  costs of  replacement  cooling  towers,
additional expenses incurred in the use of equipment or facilities, or claims of
customers of the Purchaser.  The disclaimer shall apply to consequential damages
based upon any cause of action asserted against Seller, including claims arising
out of breach of warranty,  expressed or implied, guarantee,  product liability,
negligence,  personal  injury or any other clam pertaining to the performance or
non-performance  of this contract by Seller. (c) Seller shall not be responsible
for handling or  modification  of the cooling tower by Purchaser.  (d) Except as
otherwise  set  forth in this  Agreement,  no  statement,  remark  ,  agreement,
representation, promise or understanding, oral or written, made by Seller or any
agent,  representative  or  employee  which  is not  contained  herein  will  be
recognized or enforceable or binding upon Seller.







                                LICENSE AGREEMENT


         THIS LICENSE  AGREEMENT (this  "Agreement") is made and entered into as
of the 4th day of  December,  1998 by and  between  AGGREKO  INC.,  a  Louisiana
corporation  ("Aggreko") and TOWER TECH, INC., an Oklahoma  corporation  ("Tower
Tech").

                                   WITNESSETH:

         WHEREAS,  pursuant to that certain Asset Purchase  Agreement (herein so
called),  dated as of December  4, 1998 by and  between  Aggreko and Tower Tech,
Tower Tech has agreed to sell to Aggreko and Aggreko has agreed to purchase from
Tower  Tech,  substantially  all of the  properties  and  assets  of Tower  Tech
relating to the leasing and renting and servicing of industrial  modular cooling
towers (the "Business");

         WHEREAS,  as contemplated by the Asset Purchase  Agreement,  Tower Tech
shall retain the ownership of certain patents, trademarks, trade names and other
proprietary rights which have been utilized in connection with the Business;

         WHEREAS,  Aggreko  desires to obtain an exclusive  license to use for a
limited  time  period of time such  patents,  trademarks,  trade names and other
proprietary rights in its operation of the Business and Tower Tech is willing to
grant such license to Aggreko on the terms and conditions  hereinafter provided;
and

         WHEREAS,  pursuant  to Section  3.07 of the Asset  Purchase  Agreement,
Aggreko and Tower Tech have agreed to execute and deliver this  Agreement on the
closing  date  contemplated  by the Asset  Purchase  Agreement;  and the  mutual
execution  and  delivery  of this  Agreement  is a  condition  precedent  to the
obligations   of  Aggreko  and  Tower  Tech  to  consummate   the   transactions
contemplated by the Asset Purchase Agreement.

         NOW,  THEREFORE,  in  consideration  of the above premises,  the mutual
agreements  set forth  herein and other  good and  valuable  consideration,  the
receipt and  sufficiency  of which are hereby  acknowledged,  the Parties hereto
hereby agree as follows:

                                   ARTICLE ONE

                                   DEFINITIONS

         1.1 Certain Definitions. The terms specified in this Section 1.1 shall,
for all purposes of this Agreement,  have the meanings herein specified,  unless
the context expressly or by necessary implication otherwise requires.



<PAGE>



         "Affiliate"  shall mean,  with respect to any Person,  any other Person
that, directly or indirectly through one or more intermediaries, controls, or is
controlled by, or is under common control with, such Person.

         "Cooling Tower", and collectively, "Cooling Towers," shall mean any and
all cooling towers models manufactured by or on behalf of Tower Tech, including,
without  limitation  those models  described on Exhibit A as may be amended from
time to time by adding or deleting cooling towers, and in or to which Tower Tech
owns or holds  Proprietary  Rights,  but  specifically  excluding  all  concrete
cooling towers.

         "Cooling  Tower Patent",  and  collectively,  "Cooling Tower  Patents",
shall mean any and all Patents  specifically related to the Cooling Towers which
are owned or held by Tower Tech at any time during the Term.

         "Cost," and collectively "Costs," shall mean any and all reasonable and
necessary  expenses and other costs incurred or sustained  regarding the subject
matter,  including without limitation attorney fees, court costs,  accountant or
bookkeeping  fees,  broker fees,  filing,  certificate,  license or permit fees,
fabrication,  shipping,  handling,  postage, long distance telephone,  facsimile
transmission, photocopies, courier delivery, freight, travel, lodging and meals.

         "Develop"  or  "Developed"  or  "Developing"  or  "Development"   shall
collectively  mean to  design,  plan,  manufacture,  assemble,  produce,  erect,
construct,   install,   or  otherwise   develop  the  Cooling   Towers  and  any
Improvements, with or without the Licensor Technology.

         "Effective Date" shall mean the date of this Agreement.

         "Improvement",  and collectively,  Improvements, shall mean any and all
additions, alterations, modifications, design changes, and other improvements to
the Cooling Towers which are  individually  or jointly  Developed by Tower Tech,
Aggreko,  any  Sublicensee or any third parties at any time during the Term, and
regardless  whether Tower Tech owns or holds any  Proprietary  Rights therein or
thereto.

         "Improvement  Patent," and collectively,  "Improvements  Patents" shall
mean any and all  Patents  specifically  related to the  Improvements  which are
owned or held by Tower Tech at any time during the Term.

         "License,"  shall  collectively  mean any and all exclusive  rights and
licenses  which  Tower Tech shall  grant to Aggreko  regarding  the  Proprietary
Rights within the License Territory pursuant to Article Two.

         "License Territory," shall collectively mean anywhere in the world.

         "Licensed  Product,"  shall  collectively  mean (a) the Cooling Towers,
less and except any Nonproprietary Parts, (b) any Improvements,  less and except
any  Nonproprietary   Parts,  (c)  the  Proprietary  Rights,  (d)  the  Licensor
Technology and (e) any Materials.


<PAGE>


     "Licensed  Product Patent," and  collectively,  "Licensed Product Patents,"
shall mean any and all Cooling Tower Patents and Improvement Patents.

         "Licensor  Technology,"  shall  collectively  mean any and all of Tower
Tech's  engineering  and  technical  processes,   techniques,   know-how,  data,
information,  and other  technology  specifically  used to Develop  the  Cooling
Towers and any Improvements.

     "Material," and collectively, "Materials" shall mean any and all Technology
Materials and Promotional Materials.

         "Nonproprietary Part," and collectively,  "Nonproprietary Parts," shall
mean  any  and  all  parts  and   components  of  the  Cooling  Towers  and  any
Improvements,  in or to which  Tower  Tech does not own or hold any  Proprietary
Rights at any time during the Term.

     "Part," and collectively,  "Parts" shall mean any and all Proprietary Parts
and Nonproprietary Parts.

         "Party," and  collectively,  "Parties," shall mean either or both Tower
Tech and Aggreko.

         "Patent," and collectively,  "Patents," shall mean any and all patents,
corresponding letters patent, patents pending, and associated patent rights, any
subsequent  patent  applications and resulting issued patents claiming  priority
from or based on the original patents,  and all divisions,  reissues,  renewals,
extensions,  and substitutions of the foregoing,  which the holder owns or has a
right to grant licenses under pursuant to U.S.A. or foreign law.

         "Person," shall mean an individual,  corporation,  partnership,  trust,
unincorporated   organization  or  a  government  or  any  agency  or  political
subdivision thereof.

         "Promotional  Material," shall  collectively  mean any and all of Tower
Tech's papers, brochures, pamphlets, documents, advertisements,  displays, video
and audio  presentations,  and other tangible  media and materials  specifically
used to promote the Licensed Product,  and regardless whether Tower Tech has any
Proprietary Rights therein or thereto.

         "Proprietary Part," and collectively,  "Proprietary  Parts," shall mean
any and all parts and components of the Cooling Towers and any Improvements,  in
or to which Tower Tech owns or holds any  Proprietary  Rights at any time during
the Term.

         "Proprietary Right," and collectively, "Proprietary Rights," shall mean
any and all Licensed Product Patents,  copyrights, and other proprietary rights,
titles  and  interest  in  or to  the  Cooling  Towers,  any  Improvements,  the
Materials,  the Trademark,  the Trade Name and the CTI  certification  number(s)
which Tower Tech owns,  holds or has a right to grant licenses under at any time
during the Term,  including  without  limitation  those certain Licensed Product
Patents more particular described on Exhibit B.

         "Royalty,"  and  collectively,  "Royalties,"  shall  mean  any  and all
continuing   percentage  royalties  payable  to  Tower  Tech  pursuant  to  this
Agreement.

         "Sublicense," and collectively,  "Sublicenses,"  shall mean any and all
sublicenses  of the  License  granted by Aggreko to a  Sublicensee  pursuant  to
Article Two.


<PAGE>



         "Tax,"  and  collectively,  "Taxes,"  shall  mean  any  and  all  fees,
impositions,  premiums,  duties,  assessments,  and  other  taxes of any  nature
incurred or sustained regarding the subject matter, including without limitation
any  imposed  for  sales,  use,  income,  import,  export,  currency,  exchange,
certificates, licenses and permits.

         "Technology Material," and collectively,  "Technology Materials," shall
mean any and all of Tower  Tech's  designs,  drawings,  blueprints,  schematics,
documents,  manuals,  specifications,  software,  and other  tangible  materials
regarding the Licensor  Technology  which are  specifically  used to Develop the
Cooling Towers and any Improvements, whether or not copyrighted.

         "Trademark,"  shall collectively mean those certain logos or trademarks
of Tower Tech more  particularly  described  or  displayed on Exhibit C, and any
other trademarks, service marks, logos, or other proprietary marks regarding the
Licensed  Product in or to which  Tower  Tech  shall  have any  right,  title or
interest at any time during the Term.

         "Trade  Name," shall  collectively  mean those  certain  trade names of
Tower Tech more particularly  described or displayed on Exhibit D, and any other
trade names or other  proprietary  names regarding the Licensed Product in or to
which Tower Tech shall have any right,  title or interest at any time during the
Term

         1.2 Other Definitions.  In addition to the terms defined in Section 1.1
hereof,  certain  other  terms are  defined  elsewhere  in this  Agreement,  and
whenever such terms are used in this Agreement, they shall have their respective
defined  meanings,  unless the context  expressly  or by  necessary  implication
otherwise requires.


                                   ARTICLE TWO

                              LICENSE; SUBLICENSES

         2.1 Grant of License.  Tower Tech hereby grants to Aggreko the License,
which shall be limited solely to the following rights and license,  for the Term
and within the License Territory:

         (a) an  exclusive,  nontransferable  right and  license to utilize  the
Proprietary  Rights in connection with the business of the leasing and rental of
the  Cooling  Towers  and any  Improvements  within any  geographic  area of the
License Territory; and

         (b) an  exclusive,  nontransferable  right and  license to utilize  the
Trademark  and Trade Name in  connection  with the  business  of the leasing and
rental of the Cooling Towers and any Improvements  within any geographic area of
the License Territory.
         Notwithstanding anything contained in this Article Two to the contrary,
Aggreko  acknowledges  and agrees that the License  granted  hereunder  shall be
subject  to the  rights of those  parties  designated  as  "Licensees"  in those
certain  License  Agreements  listed on Exhibit E attached hereto (the "Existing
License  Agreements").  Tower Tech specifically agrees that hereinafter it shall
not grant any license or similar right with respect to the  Proprietary  Rights,
the  Trademark  or the Trade Name which would  impair or violate  the  exclusive
rights and licenses granted to Aggreko hereunder. In addition, Tower Tech agrees
to promptly  use its best  efforts to amend,  modify  and/or  alter the Existing
License  Agreements  to clarify  and  specifically  provide  that the  Licensees
thereunder do not have any right or license to utilize the  Proprietary  Rights,
the Trademark or the Trade Name in  connection  with the business of the leasing
and rental of the Cooling Towers and any Improvements.

         2.2. Sublicenses. Aggreko shall have no authority or right to grant any
Sublicenses  of any part of the License to  Sublicensees  within any part of the
License Territory;  provided,  that, Aggreko may grant Sublicenses to any of its
Affiliates  anywhere in the License Territory.  Aggreko shall provide Tower Tech
with  written  notice of any such  Sublicense  within  thirty  (30)  days  after
granting any such Sublicense.

                                  ARTICLE THREE

                         ROYALTIES; PERIODIC STATEMENTS

         3.1  Royalties.  Commencing  upon the Effective  Date and no later than
forty-five  (45) days after the end of each  calendar  quarter  during the Term,
Aggreko  shall pay to Tower Tech  Royalties in an amount equal to three  percent
(3%) of the  revenue  received  by Aggreko or its  Affiliates  which is directly
derived  from  the  leasing  or  rental  of  the  Cooling  Towers.   Tower  Tech
acknowledges and agrees that it shall not be entitled to any Royalty for amounts
received by Aggreko with respect to labor  performed or any ancillary  equipment
or services provided by Aggreko or its Affiliates in connection with the leasing
or rental of any Cooling Tower.  In addition,  Tower Tech shall be entitled to a
Royalty of three (3%) of the revenue  received by Aggreko or its Affiliates from
the sale of any Cooling Tower,  exclusive of all taxes collected by Aggreko. Any
such Royalties  shall be due and payable within  forty-five  (45) days after the
end of the calendar  quarter in which Aggreko or any of its Affiliates  receives
the sales price with respect to any sale of a Cooling Tower.

         3.2 Periodic  Statements.  During the Term, within forty-five (45) days
after the end of every calendar  quarter,  Aggreko shall furnish to Tower Tech a
written statement setting forth all calculations relating to the Royalty payable
with  respect to such  quarter,  including,  without  limitation,  the number of
Cooling Towers sold, leased or rented and the revenue received by Aggreko or its
Affiliates during such quarter from such sales, leases and rentals.

         3.3 Books and Records.  Aggreko shall keep at its  principal  executive
offices all such proper  books of account  and  records as may be  necessary  to
enable the  Royalties  hereunder to be accurately  ascertained  and shall permit
Tower Tech or its duly  authorized  representative  to audit and investigate the
same during Aggreko's regular business hours, at Tower Tech's own expense.

         3.4 Taxes On Royalties.  In event that any governmental authority shall
impose  any  Taxes  on any of the  Royalties  required  by this  Agreement,  and
requests  Aggreko to  withhold  the amount  thereof  from such  Royalties,  then
Aggreko  may  so  deduct  them.  Proper  receipts   indicating  the  payment  or
withholding thereof on behalf of Tower Tech shall be promptly submitted to Tower
Tech. If requested by Tower Tech,  Aggreko shall fully cooperate with Tower Tech
in a  determination  of the  legality or  propriety  of any such  Taxes,  and in
pursuing any legal remedies available to Tower Tech, with the cost thereof to be
paid by Tower Tech.



<PAGE>


                                  ARTICLE FOUR

                       PROPRIETARY RIGHTS; INDEMNIFICATION

         4.1 Proprietary Rights. Tower Tech represents that , to the best of its
knowledge,  it is the exclusive owner or holder of the Proprietary  Rights as of
the Effective Date, that it will be such as to any subsequent  Licensed  Product
Patents as of their issue  date,  and that Tower Tech has the right to grant the
License to Aggreko.  At all times during the Term, the Licensed  Product Patents
shall be and remain the exclusive and separate  property of Tower Tech,  subject
to this Agreement and the License.

         4.2 Patent Applications. At all times during the Term, Tower Tech shall
have the right and option,  without  obligation and in its sole  discretion,  to
prepare,  file and prosecute any application for Licensed Product Patents within
the License Territory.

         4.3 Infringement.  At all times during the Term, and regardless whether
either  Party  will or may be  adversely  affected  thereby,  each  Party  shall
promptly  notify  the other in  writing  of any  actual,  potential  or  alleged
infringement  regarding the Proprietary  Rights,  the Licensed  Product,  or the
License within the License Territory.  Tower Tech shall have the first right and
option, without obligation and in its sole discretion,  to take such appropriate
action as Tower Tech deems necessary  regarding the infringement.  If Tower Tech
shall fail or refuse to do so,  then  Aggreko  shall  have the second  right and
option, without obligation and in its sole discretion,  to take such appropriate
action as Aggreko  deems  necessary  regarding  the  infringement.  If any legal
proceedings  are  commenced  by either  or both  Parties  against a third  party
alleging  infringement of the Proprietary  Rights, the Licensed Product,  or the
License  within the License  Territory,  then if Tower Tech shall have exercised
its aforesaid  first option,  any  settlements,  judgments,  or Costs awarded to
either  Party,  including  any  ongoing  payments  of  royalties  or fees by the
infringer,  shall be allocated and paid, first, to the Costs associated with the
legal  proceedings  and second,  to the Party  prosecuting  the  proceeding.  If
Aggreko shall have exercised its aforesaid  second option,  all of the foregoing
shall be paid to Aggreko and all such Costs shall be paid by Aggreko.



<PAGE>


         If any legal  proceedings are commenced  against either or both Parties
or  the  Licensed  Product  by  a  third  party  alleging  infringement  by  the
Proprietary  Rights,  the  Licensed  Product,  or the  License  of the rights or
property of such third party  within the  License  Territory,  then in the event
Aggreko  receives  written  notice of any such legal  proceedings  Aggreko shall
promptly notify Tower Tech thereof (the "Infringement Notice"). Thereupon, Tower
Tech shall  promptly  take such action as may be necessary to protect and defend
Aggreko  against any such claim by any third party and shall  indemnify and hold
Aggreko  harmless  against any loss or Costs  incurred by Aggreko in  connection
therewith. If Tower Tech notifies Aggreko within ten (10) days of its receipt of
the  Infringement  Notice (the  "Response  Period") of its  agreement  to assume
responsibility  for such legal  proceeding  and to  indemnify  and hold  Aggreko
harmless  against any loss or Costs incurred by Aggreko in connection  therewith
and diligently  pursues its obligations in this regard,  then Aggreko shall have
no power or authority to settle or  compromise  any such claim by a third party.
Tower Tech shall have the right after  considering the best interests of Aggreko
and diligently  consulting with Aggreko thereon to defend,  compromise or settle
any such claims at the sole cost and expense of Tower Tech,  using  attorneys of
its own choosing,  and bearing always in mind  Aggreko's best interest.  Aggreko
agrees to  cooperate  at Tower  Tech's sole cost and expense  with Tower Tech in
connection with the defense or settlement of any such claim.

          If,  with  respect  to such  third  party  claim,  Tower Tech does not
acknowledge  in writing as provided  above within the  Response  Period or Tower
Tech  disclaims  in writing to Aggreko  Tower  Tech's  obligation  to  indemnify
Aggreko pursuant hereto,  Aggreko may defend against such claim or related legal
proceeding with such counsel and in such manner as it deems appropriate, and may
consent to the  settlement or compromise or, consent to the entry of a judgement
arising from, such claim or legal proceeding  without the consent of Tower Tech.
Aggreko  shall have the right to  discontinue  the payment of Royalties to Tower
Tech during the period  commencing  upon the  termination of the Response Period
and ending upon the  termination of such  proceedings,  whether by settlement or
otherwise. In addition, upon the termination of such legal proceedings,  whether
by settlement or otherwise, Aggreko shall be entitled to discontinue the payment
of Royalties to Tower Tech until such time as Aggreko shall have been reimbursed
for the Costs associated with such legal proceedings.

         In every case,  (a) the Party taking  action shall do so in the name of
the real party in interest as determined by applicable law, (b) each Party shall
provide the other,  its nominees and attorneys,  with all available  information
and  documents  regarding  the  infringement,  and (c) the  Parties  shall fully
cooperate with each other and, if necessary, provide testimony or other evidence
in any legal proceedings.

         4.4  Improvements.  All  Improvements  Developed  during the Term shall
become the separate and individual  property of the Party or Parties  Developing
them,  and such  Party or  Parties  shall  own,  hold or have the sole  right to
acquire all Proprietary Rights therein or thereto.  Immediately upon Development
by Tower Tech and issuance  thereof,  all Improvements and Improvements  Patents
thereon shall automatically be deemed licensed to Aggreko during the Term.

         4.5  Trademark  and Trade Name. In any and all use of any Trademark and
any Trade Name for any promotion of the Licensed  Product or otherwise,  Aggreko
shall (a) acknowledge  and recognize the Proprietary  Rights therein or thereto,
and not do or  permit  any act or thing  which  will or may  contest,  impair or
otherwise  adversely  affect the same,  (b) clearly  disclose and indicate  such
Proprietary  Rights to all customers and other third parties,  and not to in any
manner  represent  that Aggreko has any ownership or other interest in or to any
Trademark or any Trade Name, other than pursuant to this Agreement.

                                  ARTICLE FIVE

                                TERM OF AGREEMENT

         Subject to the terms of this  Article  Five,  the Term shall be the ten
(10) year period  commencing  on the  Effective  Date. In the event either Party
fails to comply  with any of the terms and  conditions  of this  Agreement,  the
non-breaching  Party may give the  breaching  Party  thirty  (30) days'  written
notice  specifying the breach,  and if such breach fails to be cured within such
period, the non-breaching Party may immediately terminate this Agreement


                                   ARTICLE SIX

                                   ARBITRATION

         THE PARTIES SHALL USE THEIR  RESPECTIVE BEST EFFORTS TO SETTLE AMICABLY
ANY DISPUTES, DIFFERENCES OR CONTROVERSIES ARISING BETWEEN THE PARTIES OUT OF OR
IN CONNECTION WITH OR IN RESPECT OF THIS AGREEMENT.  HOWEVER,  IF NOT SO SETTLED
THEN THE SAME  SHALL BE  SUBMITTED  TO  ARBITRATION  AND TO THE  FULLEST  EXTENT
PERMITTED BY LAW, BE SOLELY AND FINALLY SETTLED BY ARBITRATION.  THE ARBITRATION
PROCEEDING SHALL BE HELD IN DALLAS,  TEXAS, AND SHALL BE CONDUCTED IN ACCORDANCE
WITH THE COMMERCIAL  ARBITRATION RULES OF THE AMERICAN  ARBITRATION  ASSOCIATION
AND TO THE EXTENT NOT INCONSISTENT THEREWITH, THE TEXAS GENERAL ARBITRATION ACT,
TITLE  10,  VERNON'S  ANN.CIV.STAT.  JUDGEMENT  UPON THE AWARD  RENDERED  BY THE
ARBITRATORS MAY BE ENTERED IN ANY COURT HAVING JURISDICTION,  OR APPLICATION MAY
BE MADE TO SUCH  COURT FOR A JUDICIAL  ACCEPTANCE  OF THE AWARD AND ANY ORDER OF
ENFORCEMENT AS THE CASE MAY BE.


                                  ARTICLE SEVEN

                                  MISCELLANEOUS

         7.1 Notices. All notices,  requests and other communications under this
Agreement  shall be in  writing  (including  a writing  delivered  by  facsimile
transmission)  and  shall  be  deemed  to have  been  duly  given  if  delivered
personally,  or sent by either  certified or  registered  mail,  return  receipt
requested, postage prepaid, by overnight courier guaranteeing next day delivery,
or by facsimile, addressed as follows:


         a)       If to Tower Tech :

                  Tower Tech, Inc.
                  11935 South I-44 Service Rd.
                  P.O. 1838
                  Oklahoma City, OK 73173
                  Attn: Harold D. Curtis, Chief Executive Officer
                  Facsimile No.:   (405) 979-2131

or at  such  other  address  or  facsimile number as Tower Tech may have advised
Aggreko in writing; and

         (b)      If to Aggreko:

                  Aggreko Inc.
                  4607 W. Admiral Doyle Drive
                  New Iberia, LA 70560
                  Attn: Terry Dressel, Chief Financial Officer
                  Facsimile No.: (318) 367-0870

or at such other  address or facsimile  number as Aggreko may have advised Tower
Tech in writing.

All such notices, requests and other communications shall be deemed to have been
received on the date of delivery thereof, if delivered by hand, on the third day
after the mailing thereof, if mailed, on the next day after the sending thereof,
if by overnight courier, and when receipt is acknowledged, if faxed.

         7.2. Waivers and Amendments. No amendment or waiver of any provision of
this  Agreement,  nor consent to any  departure  therefrom,  shall be  effective
unless the same be in writing  and  signed by each party  hereto,  and then such
waiver or consent shall be effective  only in the specific  instance and for the
specific  purpose for which given. No failure on the part of any party hereto to
exercise,  and no delay in exercising,  any right  hereunder  shall operate as a
waiver thereof;  nor shall any single or partial exercise of any right hereunder
preclude  any other or further  exercise  thereof or the  exercise  of any other
right. The remedies  provided in this Agreement are cumulative and not exclusive
of any remedies provided by law.

         7.3. Binding Effect.  This Agreement shall be binding upon and inure to
the  benefit  of  the  Parties  hereto  and   there  respective  successors  and
permitted assigns.

         7.4      Assignment.



<PAGE>


         Neither  party shall have any right to transfer or assign its  interest
or rights in this  Agreement or delegate its  obligations  under this  Agreement
without the prior written consent of the other party hereto.



         7.5 Change in Control.  In the event of the  occurrence  of a Change in
Control (as hereinafter  defined) with respect to Tower Tech, Aggreko shall have
the right, in its sole  discretion,  to either (i) terminate this Agreement upon
providing  Tower Tech with at least thirty (30) days written notice of Aggreko's
intention to terminate this Agreement,  or (ii) continue the performance of this
Agreement;  provided,  that,  the  surviving  or  resulting  entity or  entities
involved in any such Change in Control transaction shall specifically assume, as
a co-obligor with Tower Tech and as a condition to the effectiveness of any such
Change in Control transaction, the obligations of Tower Tech hereunder.

         For purposes of this Agreement,  a Change in Control shall be deemed to
have  occurred  if (i) a majority of the voting  capital  stock in Tower Tech is
acquired by a third party or third  parties,  other than those  persons  holding
shares of Tower Tech's  capital  stock on the date of this  Agreement,  or their
respective  affiliates,  (ii) Tower Tech enters  into a merger or  consolidation
with  another  corporation  or  business  entity in which  Tower Tech is not the
surviving  entity,  (iii)  Tower Tech  becomes a  majority-owned  subsidiary  of
another corporation, (iv) a change during any period of two consecutive years of
a  majority  of the  members  of the Board of  Directors  of Tower  Tech for any
reason,  unless the  election,  or the  nomination  for election by Tower Tech's
stockholders,  of each director was approved by a majority vote of the directors
then still in office who were directors at the beginning of such period,  or (v)
more than forty  percent  (40%) of the assets of Tower Tech are  transferred  or
sold.

         7.6 GOVERNING LAW. THIS  AGREEMENT,  AND THE RIGHTS AND  OBLIGATIONS OF
THE  PARTIES  HERETO,  SHALL  BE  GOVERNED  BY AND  CONSTRUED  AND  ENFORCED  IN
ACCORDANCE  WITH THE SUBSTANTIVE  LAWS OF THE STATE OF TEXAS,  WITHOUT REGARD TO
ITS PRINCIPLES OF CONFLICT OF LAWS.

         7.7 Number and Gender. Whenever herein the singular number is used, the
same shall include the plural where  appropriate,  and words of any gender shall
include each other gender where appropriate.

         7.8 Captions.  The  captions,  headings and  arrangements  used in this
Agreement  are for  convenience  only  and do not in any way  affect,  limit  or
amplify the provisions hereof.

         7.9 Entirety.  This Agreement  contains the agreement and understanding
among the Parties with respect to the matters  addressed  herein and  supersedes
all  prior  representations,   inducements,  promises  or  agreements,  oral  or
otherwise, which are not embodied herein.

         7.10 Third Party  Beneficiaries.  Nothing contained herein,  express or
implied,  is intended to confer upon any person or entity other than the Parties
hereto and their  successors  in interest  and  permitted  assigns any rights or
remedies under or by reason of this Agreement.


<PAGE>


         IN WITNESS WHEREOF,  the Parties hereto have executed this Agreement as
of the date first above written.


AGGREKO:                     AGGREKO INC.



                              By:ss/GEORGE P. WALKER
                                  -------------------------------
                                  Printed Name:  George P. Walker
                                  Title: Executive Vice President

                               By: ss/TERREL P. DRESSEL, JR.
                                   ----------------------------------
                                   Printed Name: Terrel P. Dressel, Jr.
                                   Title: Vice President Finance




TOWER TECH:                   TOWER TECH, INC.



                                By:ss/HAROLD D. CURTIS
                                   ------------------------------
                                   Printed Name: Harold D. Curtis
                                   Title: Chief Executive Officer









                            NONCOMPETITION AGREEMENT


         THIS  NONCOMPETITION  AGREEMENT (this  "Agreement") is made and entered
into as of the 4th day of December, 1998, by and among AGGREKO INC., a Louisiana
corporation  ("Purchaser"),TOWER  TECH, INC., an Oklahoma corporation ("Seller")
and HAROLD D. CURTIS, a resident of Cleveland County, Oklahoma ("Curtis").

                                   WITNESSETH:

         WHEREAS,  Seller is  currently  engaged in the business of, among other
things, leasing and renting industrial modular cooling towers (the "Business");

         WHEREAS,  pursuant to that certain Asset Purchase  Agreement (herein so
called)  dated as of December  4, 1998,  by and  between  Purchaser  and Seller,
Seller has agreed to, among other  things,  sell to Purchaser  and Purchaser has
agreed to, among other  things,  purchase from Seller,  the Acquired  Assets (as
such term is defined in the Asset  Purchase  Agreement)  in order to acquire the
Business from Seller;

         WHEREAS, Curtis owns a significant amount of the issued and outstanding
capital stock of Seller and will therefore, directly or indirectly,  benefit and
receive  substantial  consideration  from the  sale of the  Acquired  Assets  to
Purchaser;

         WHEREAS,  pursuant to the Asset Purchase  Agreement,  Seller and Curtis
have agreed to execute and deliver this Agreement as a condition to the purchase
by Purchaser of the Acquired Assets; and

         WHEREAS,  Purchaser desires to protect the value of the Acquired Assets
and the  Business by  obtaining  from Seller and Curtis  this  Agreement  to (i)
maintain the  confidentiality  of certain  information  concerning  the Acquired
Assets and the Business,  including, without limitation, trade secrets and other
confidential  and/or  proprietary  information,  and (ii) refrain from competing
with  the  Business  and  Purchaser  for a  reasonable  period  of  time  in the
Restricted Area (as defined in Section 2 below).

         NOW,  THEREFORE,  in consideration of the foregoing premises and of the
respective   representations  and  warranties  hereinafter  set  forth,  of  the
covenants and agreements  contained herein and in the Asset Purchase  Agreement,
and other good and valuable consideration,  the receipt and sufficiency of which
are hereby acknowledged, the parties hereto hereby agree as follows:



<PAGE>



                                                          
         1. Disclosure of Information. Seller and Curtis agree that for a period
of five (5) years from the date hereof (the "Term"),  neither of them nor any of
their respective  Affiliates (as defined in Section 15 below) shall, without the
prior  written  consent of the Board of  Directors  of  Purchaser,  directly  or
indirectly,  reveal,  divulge,  disclose or otherwise communicate to any person,
firm,  association,  corporation  or other entity in any manner  whatsoever,  or
otherwise make use of, confidential,  proprietary or trade secret information of
any kind, nature or description  concerning any matters affecting or relating to
Purchaser or the Business,  including,  without limitation: (a) the names of any
of the prior,  present or  prospective  clients,  customers  or  accounts of the
Business,  (b) the prices for which the Business obtains or has obtained,  or at
which it sells or has  sold,  or at which it  leases  or rents or has  leased or
rented,  the  properties  or  services  of the  Business,  (c) the  names of the
personnel  involved in the Business,  (d) the financial affairs of the Business,
(e) the method of  operating  the  Business,  (f) the method of  marketing,  and
determining  markets  for,  the  Business,  or (g)  the  processes,  techniques,
methods, know-how,  designs, design improvements,  plans, trade secrets or other
data of any kind,  nature or description  whatsoever  relating  primarily to the
Business. Without regard to whether any or all of the foregoing matters would be
deemed confidential, material or important, the parties hereto stipulate that as
between  them,  the same are  confidential,  material and  important and gravely
affect  Purchaser's  effective  and  successful  conduct of the Business and its
goodwill.  Notwithstanding anything contained in this paragraph to the contrary,
neither  Seller  nor  Curtis  nor any of their  respective  Affiliates  shall be
prohibited  from  disclosing  any  information  regarding  the  Business if such
information  is required to be  included in any filing with the  Securities  and
Exchange Commission,  including financial  statements included therewith,  or is
ordered  to be made  available  by any court of  competent  jurisdiction  or any
governmental authority;  provided,  however, that Seller or Curtis shall provide
Purchaser  with  written  notice of such court order or order by a  governmental
authority prior to disclosing such information.

         Notwithstanding the foregoing paragraph,  neither the Seller nor Curtis
shall be liable pursuant to this Section 1 for disclosures as to (i) information
that is or becomes generally available to the public other than as a result of a
disclosure  by Seller or Curtis,  or (ii)  information  which is received from a
third party; provided,  that, such source is not known by Seller or Curtis to be
bound  by a  confidentiality  agreement,  or other  obligation  of  secrecy,  to
Purchaser.

         2.  Covenant Not to Compete.  Seller and Curtis agree that for the Term
of this  Agreement,  without the prior written consent of the Board of Directors
of  Purchaser,  neither of them nor any of their  respective  Affiliates  shall,
directly or indirectly,  through any  corporation,  organization or other entity
owned or  controlled  by Seller or Curtis,  or as  stockholder  or holder of any
equity security (except for an equity interest in a public company that does not
exceed five percent (5%) of its total outstanding  voting stock),  partner or in
any other capacity whatsoever:

                  (a) call upon,  solicit,  divert, take away or attempt to call
         upon, solicit,  divert or take away any existing,  clients,  customers,
         suppliers,  businesses  or accounts or  potential  clients,  customers,
         suppliers,  businesses  or  accounts  of the  Business  or any  portion
         thereof,  or of Purchaser or any of its  Affiliates in connection  with
         any business  competitive  with the Business or any portion  thereof in
         the Restrictive Area (as hereinafter  defined) nor interfere or compete
         with Purchaser or any of its Affiliates, or any portion of the Business
         in connection with such clients, customers,  suppliers,  businesses and
         accounts in the Restricted Area;

                  (b) hire,  knowingly attempt to hire,  contact or solicit with
         respect to hiring any of those employees  listed on Schedule A attached
         hereto;


<PAGE>


                  (c) engage in, or give any  advice to any Person  engaged  in,
         any  business  competitive  in any  respect  with the  Business  or any
         portion thereof in the Restricted Area;

                  (d)  lend  credit,  money or  reputation  for the  purpose  of
         establishing or operating any business competitive with the Business or
         any portion thereof in the Restricted Area; or

                  (e)  participate  in the ownership,  management,  operation or
         control of any Person that is engaged in any business  competitive with
         the Business or any portion thereof in the Restricted Area.

         The  foregoing  covenants are intended to restrict  Seller,  Curtis and
their  respective  Affiliates from competing in any manner with Purchaser or any
of its Affiliates in any business similar to the Business or any portion thereof
in the activities  which have  heretofore been carried on in connection with the
Business  or any  portion  thereof.  The parties  hereto  hereby  agree that the
prohibitions set forth in this Section 2 shall be liberally interpreted so as to
carry out the intents and purposes of this Agreement.

         If,  during  any  period  within  the Term,  Seller or Curtis is not in
compliance with the terms of this Section 2, the Purchaser shall be entitled to,
among other remedies,  require compliance by Seller and Curtis with the terms of
this  Section  2  for  an  additional   period  equal  to  the  period  of  such
noncompliance. The term "Term" shall also include this additional period. Seller
and  Curtis  hereby  acknowledge  that  the  geographic  boundaries,   scope  of
prohibited  activities and the time duration of the provisions of this Section 2
are  reasonable  and are not broader than are necessary to maintain the goodwill
associated with the Business and to protect other legitimate  business interests
of the Purchaser and its Affiliates.

         For purposes of this Agreement, the term "Restricted Area" shall mean:

                  (i) anywhere in North America (including,  without limitation,
         the United  States,  Canada,  Mexico,  Puerto Rico and the U.S.  Virgin
         Islands),  Central America,  South America,  Africa, Europe (including,
         without  limitation,   Russia  and  the  former  Soviet  states),  Asia
         (including, without limitation, China, Japan and India), Australia, New
         Zealand  and  every  province,  district,  state  or  territory  of the
         foregoing countries, in which the Business is currently conducted;

                  (ii) to the  extent  not  the  referred  to in the  foregoing,
         anywhere in North America (including,  without  limitation,  the United
         States,  Canada,  Mexico,  Puerto  Rico and the U.S.  Virgin  Islands),
         Central America,  South America,  Africa,  Europe  (including,  without
         limitation,  Russia and the former  Soviet  states),  Asia  (including,
         without limitation, China, Japan and India), Australia, New Zealand and
         every  province,   district,   state  or  territory  of  the  foregoing
         countries, in which Seller has or had operations in connection with the
         Business; and



<PAGE>


                  (iii) to the extent not referred to in the foregoing, anywhere
         in North America  (including,  without  limitation,  the United States,
         Canada,  Mexico,  Puerto  Rico and the U.S.  Virgin  Islands),  Central
         America, South America, Africa, Europe (including,  without limitation,
         Russia  and  the  former  Soviet  states),  Asia  (including,   without
         limitation,  China, Japan and India),  Australia, New Zealand and every
         province,  district,  state or  territory of the  foregoing  countries.
         (Seller hereby  acknowledges  that the Business as currently  conducted
         directly affects regional markets and as a consequence,  extends beyond
         the regions in which the Business directly operates).

         3. Noncompetitive Activities.  Notwithstanding anything to the contrary
contained in Section 1 or Section 2 hereof,  the parties  hereto  understand and
agree  that  neither  Seller's  nor any of its  Affiliate's  involvement  in the
following  activities shall be deemed to be competition  prohibited by Section 2
hereof:

         (i)      designing, engineering,  manufacturing,  marketing, selling or
                  servicing  industrial modular cooling towers for non-rental or
                  non-leasing applications; and

         (ii)  utilizing a capital  lease to finance  the sale of an  industrial
modular cooling tower for a non-rental application.

         4.  Enforcement  of  Covenants.  Seller and Curtis  acknowledge  that a
violation  or  attempted  violation,  on its  part or on the  part of any of its
Affiliates, of any agreement in Sections 1 and 2 above will cause such damage to
Purchaser as will be irreparable  and that the remedy at law will be inadequate.
Accordingly,  Seller and Curtis agree that the Purchaser  shall be entitled as a
matter  of  right  to an  injunction,  without  posting  of a bond or any  other
security,  from any court of  competent  jurisdiction,  restraining  any further
violation of such agreements by Seller,  Curtis or their respective  Affiliates.
Any exercise by the Purchaser of its rights  pursuant to this Section 4 shall be
cumulative  and in addition  to any other  remedies  to which  Purchaser  may be
entitled.

         5. Reformation of Sections 1 and 2. Purchaser,  Seller and Curtis agree
and stipulate that the  agreements  and covenants  contained in Sections 1 and 2
hereof are fair and reasonable in light of all of the facts and circumstances of
the relationship  between Purchaser and Seller and Curtis.  However, the parties
are aware that in certain  circumstances  courts have refused to enforce certain
agreements not to compete.  Therefore,  in furtherance of, and not in derogation
of the provisions of Sections 1 and 2,  Purchaser,  Seller and Curtis agree that
in the event a court should  decline to enforce the provisions of Sections 1 and
2, that  Sections 1 and 2 shall be deemed to be modified or reformed to restrict
Seller's or Curtis'  competition with Purchaser or its Affiliates to the maximum
extent,  as to time,  geography and business  scope,  which the court shall find
enforceable;  provided,  however,  in no event shall the provisions of Section 1
and 2 be deemed to be more restrictive to Seller and Curtis than those contained
herein.



<PAGE>


         6. Indemnification.  From and after the date hereof, Seller and Curtis,
jointly and severally,  shall indemnify,  defend and hold the Purchaser harmless
from and against any and all claims,  losses,  damages,  costs and expenses that
may be incurred  by,  imposed upon or asserted by or against  Purchaser  arising
from any  breach  of any  provisions  of this  Agreement  by Seller or Curtis if
Seller and/or Curtis is held to be in violation of this  Agreement by a court of
competent jurisdiction.

         7.  Survival.  Without  affecting  the time  limitations  set  forth in
Section 1 and Section 2 hereof, the respective  representations,  warranties and
agreements of the parties hereto set forth herein shall survive  consummation of
any transactions contemplated by the Asset Purchase Agreement.

         8. Invalid  Provisions.  If any provision hereof (other than Sections 1
and 2) is held to be illegal,  invalid or unenforceable  under present or future
laws effective during the Term hereof, such provisions shall be fully severable;
this  Agreement  shall be construed and enforced as if such illegal,  invalid or
unenforceable  provision  had never  comprised a part hereof;  and the remaining
provisions  hereof  shall  remain  in full  force  and  effect  and shall not be
affected by the illegal,  invalid or unenforceable provision or by its severance
herefrom.  Furthermore,  in lieu  of  such  illegal,  invalid  or  unenforceable
provision  there shall be added  automatically  as a part hereof a provision  as
similar in the terms, but in any event no more  restrictive  than, such illegal,
invalid or  unenforceable  provision as may be possible and be legal,  valid and
enforceable.

         9. Waivers and  Amendments.  No amendment or waiver of any provision of
this  Agreement,  nor consent to any  departure  therefrom,  shall be  effective
unless the same be in writing and signed by of each party hereto,  and then such
waiver or consent shall be effective  only in the specific  instance and for the
specific  purpose for which given. No failure on the part of any party hereto to
exercise,  and no delay in exercising,  any right  hereunder  shall operate as a
waiver thereof;  nor shall any single or partial exercise of any right hereunder
preclude  any other or further  exercise  thereof or the  exercise  of any other
right. The remedies  provided in this Agreement are cumulative and not exclusive
of any remedies provided by law.

         10. Number and Gender. Whenever herein the singular number is used, the
same shall include the plural where  appropriate,  and words of any gender shall
include each other gender where appropriate.

         11.  Captions.  The captions,  headings and  arrangements  used in this
Agreement  are for  convenience  only and do not in any way limit or amplify the
terms and provisions hereof.

         12.  Governing Law. THIS  AGREEMENT,  AND THE RIGHTS AND OBLIGATIONS OF
THE  PARTIES  HERETO,  SHALL  BE  GOVERNED  BY AND  CONSTRUED  AND  ENFORCED  IN
ACCORDANCE  WITH THE SUBSTANTIVE  LAWS OF THE STATE OF TEXAS,  WITHOUT REGARD TO
ITS PRINCIPLES OF CONFLICT OF LAWS.

         13.  Jurisdiction  and Venue.  Any  judicial  proceeding  brought by or
against any of the parties to this Agreement on any dispute  arising out of this
Agreement  shall be  brought in the state or  federal  courts of Dallas  County,
Texas,  and by  execution  and delivery of this  Agreement,  each of the parties
hereto  accepts  individually  the  exclusive  jurisdiction  and  venue  of  the
aforesaid courts.


<PAGE>


         14. Binding  Effect.  This Agreement shall be binding upon and inure to
the benefit of the parties hereto and their  respective  legal  representatives,
heirs,  successors  and assigns.  No party hereto shall assign any of its rights
hereunder or any interest  herein without the prior written consent of the other
parties hereto.

         15. Third Party  Beneficiaries.  Nothing contained  herein,  express or
implied,  is intended to confer upon any person or entity other than the parties
hereto and their  successors  in interest  and  permitted  assigns any rights or
remedies under or by reason of this Agreement.

         16.      Use of Certain Terms.

                  (a) As used in this Agreement, the term "Affiliate" shall mean
         any  Person  that,   directly  or  indirectly,   through  one  or  more
         intermediaries,  controls,  or is  controlled  by,  or is under  common
         control  with,  such  Person at any time on or after  the date  hereof,
         including,  without limitation,  the officers and directors of any such
         Person.  For  purposes  of this  definition,  "control"  shall mean the
         power, directly or indirectly, to (i) vote ten percent (10%) or more of
         the  securities  having  ordinary  voting  power  for the  election  of
         directors of such Person,  or (ii) direct or cause the direction of the
         management  and  policies  of  such  Person,  whether  by  contract  or
         otherwise.

                  (b) As used in this  Agreement,  the term "Person"  shall mean
         any   corporation,    partnership,    joint   venture,    trust,   sole
         proprietorship, individual or person or entity.

                  (c) As used in this Agreement,  the words "herein,"  "hereby,"
         "hereof"  and  "hereunder"  and other words of similar  import refer to
         this Agreement as a whole and not to any particular section, subsection
         or other subdivision.

         17.   Counterparts.   This   Agreement  may  be  executed  in  multiple
counterparts, each of which shall be deemed an original for all purposes and all
of which shall be deemed  collectively to be one agreement,  but in making proof
hereof it shall only be necessary to exhibit one such counterpart.

         18. Entirety.  This Agreement  contains the agreement and understanding
among the parties with respect to the matters  addressed  herein and  supersedes
all  prior  representations,   inducements,  promises  or  agreements,  oral  or
otherwise, which are not embodied herein.



<PAGE>


         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the date first above written.

PURCHASER:                          AGGREKO INC.



                   By:ss/GEORGE P. WALKER
                      --------------------------------
                         Printed Name: George P. Walker
                         Title: Executive Vice President



                   By: ss/TERREL P. DRESSEL, JR.
                       ------------------------------------
                         Printed Name: Terrel P. Dressel, Jr.
                         Title: Vice President Finance





SELLER:                             TOWER TECH, INC.



                   By: ss/HAROLD D. CURTIS
                       --------------------------------
                         Printed Name: Harold D. Curtis
                         Title: Chief Executive Officer



CURTIS:                ss/HAROLD D. CURTIS
                       --------------------------------
                          Harold D. Curtis, Individually








<PAGE>



                                   SCHEDULE A

                                LIST OF EMPLOYEES



Name                Address                                  Social Security

Billy W. Childers   2909 Carolina, Chickasha, OK 73018       ###-##-####

Jamie Boyd Curtis   2116 S. 13th St., Chickasha,OK 783018    ###-##-####

Kristi M. Solis     P.O. Box 492, Chickasha, OK 73023        ###-##-####

Scott F. McMillan   1905 S. 14th St., Chickasha OK 73018     ###-##-####

David "Craig" Webb  212 W. Cherokee #3, Marlow, OK 73099     ###-##-####




                                 PROMISSORY NOTE


U.S. $1,350,000.00                DALLAS, TEXAS                 December 4, 1998


         FOR  VALUE  RECEIVED,  the  undersigned,   AGGREKO  INC.,  a  Louisiana
corporation  ("Maker"),  unconditionally  promises  to pay to the order of TOWER
TECH, INC., an Oklahoma corporation ("Holder"), the principal sum of One Million
Three Hundred and Fifty Thousand Dollars ($1,350,000.00), in lawful money of the
United  States and in  immediately  available  funds,  together with accrued but
unpaid interest,  on the outstanding principal balance, in like money and funds,
at the rate  per  annum  and on the  dates  provided  below  (provided  that the
interest payable shall not exceed the Maximum Rate (as hereinafter defined)).

         1. Asset Purchase Agreement.  This Note has been executed and delivered
pursuant to that certain Asset Purchase  Agreement  dated as of December 4, 1998
by and between Maker and Holder (the "Agreement"),  pursuant to which Holder has
sold to Maker the Acquired Assets. The capitalized terms used in this Note which
are not defined  herein  shall have the  meanings  ascribed to such terms in the
Agreement.

         2. Interest.  The unpaid principal  balance of the outstanding  balance
hereunder shall bear interest at the lesser of (i) the prime rate announced from
time to time by Citibank,  N.A. (New York, N.Y.  office),  plus one percent (1%)
per annum,  and (ii) the maximum rate per annum permitted by applicable law (the
"Maximum Rate").  All past-due  principal under this Note shall bear interest at
the lesser of (i) eighteen  percent (18%) per annum,  and (ii) the Maximum Rate.
Interest  paid  or  agreed  to be paid  shall  not  exceed  the  maximum  amount
permissible under the applicable laws of the United States or the State of Texas
and, in any contingency  whatsoever,  if Holder shall receive  anything of value
deemed  interest  under such laws  which  would  exceed  the amount of  interest
permissible  under those laws, the excessive  interest shall be applied first to
the reduction of unpaid principal  outstanding under this Note and the remainder
of such  excessive  interest  shall then be refunded to Maker if such  excessive
interest exceeds unpaid principal.  All interest paid or agreed to be paid under
this Note shall,  to the extent  permitted  by  applicable  law,  be  amortized,
prorated,  allocated and spread throughout the full period until payment in full
of the  principal  so that the  interest  hereon for such full period  shall not
exceed the Maximum Rate.  Interest shall be computed on the per annum basis of a
year of 360 days and for the  actual  number  of days  (including  the first but
excluding the last day) elapsed.

         3. Payment of Principal and Interest. The outstanding principal balance
of this Note,  together with accrued interest thereon,  shall be due and payable
on December 4, 1999.

         4. Prepayment.  This  Note  may  be prepaid at any time, in whole or in
 part, without premium or penalty,  at the option of Maker.



<PAGE>



         5.  Transfer.  Holder may not sell,  transfer,  pledge,  hypothecate or
otherwise  dispose of this Note or any interest herein without the prior written
approval  of  Maker,  which  may be  granted  or  denied  by  Maker  in its sole
discretion.

         6. Events of Default.  For purposes of this Note, an "Event of Default"
shall mean:

                  (a) Failure by Maker to pay any  principal or interest on this
         Note, or any renewal, extension,  modification or rearrangement hereof,
         when due or declared due; or

                  (b)  Filing by Maker of a  voluntary  petition  or any  answer
         seeking reorganization,  arrangement,  readjustment of its debts or for
         any other relief under any  applicable  bankruptcy act or law, or under
         any other  insolvency act or consenting to, approving of or acquiescing
         in any such petition or  proceeding;  the  application by Maker for, or
         the  appointment by consent or  acquiescence  of, a receiver or trustee
         for Maker or for all or a substantial  part of the assets of Maker; the
         making by Maker of an assignment  for the benefit of creditors;  or the
         inability of Maker or admission by Maker, in writing,  of its inability
         to pay its debts as they  mature  (the term  "acquiescence"  as used in
         this  Section  6(b) shall mean the failure to file a petition or motion
         in  opposition to such petition or proceeding or to vacate or discharge
         any order,  judgment or decree  providing for such  appointment  within
         sixty (60) days after the appointment of a receiver or trustee); or

                  (c)  Filing  of  an  involuntary  petition  against  Maker  in
         bankruptcy  seeking  reorganization,  arrangement,  readjustment of its
         debts or for any other relief under any  applicable  bankruptcy  act or
         law,  or  under  any  other  insolvency  act or law,  now or  hereafter
         existing,  and such petition  remains  undismissed  or unanswered for a
         period  of  sixty  (60)  days  from  such  filing;  or the  involuntary
         appointment  of a  receiver  or  trustee  for  Maker  or  for  all or a
         substantial part of the assets of Maker,  and such appointment  remains
         unvacated  for a period of sixty (60) days or unopposed for a period of
         ten (10) days from such  appointment;  or the  issuance of a warrant of
         attachment,  execution or similar process against any substantial  part
         of the assets of Maker and such warrant remains unbonded or undismissed
         for a period of fifteen (15) days from notice to Maker of its issuance.

         7. Acceleration.  Upon the occurrence of any Event of Default set forth
in Section 6,  Holder may (but only if Maker has not cured such Event of Default
to Holder's  reasonable  satisfaction  within  fifteen  (15) days after  written
notice of such Event of Default is sent by Holder to Maker),  in  Holder's  sole
and  absolute  discretion  and upon  Maker's  receipt of written  notice to such
effect,  declare the  principal  of and  interest  accrued but unpaid under this
Note, if any, to be forthwith  due and payable,  whereupon the same shall become
due and payable without any presentment,  acceleration,  demand, protest, notice
of protest, notice of intent to accelerate,  notice of acceleration or notice of
any kind, all of which are hereby waived.

         8. Surrender.  Upon payment in full of the principal amount,  this Note
shall be surrendered by Holder to Maker for cancellation.



<PAGE>



                                                         -4-
         9. Right of Offset.  As provided in Article X of the  Agreement,  Maker
shall have the right to withhold  payment  and to offset  against any amount due
hereunder the amount of any indemnification  obligation of Holder.  Should Maker
elect to exercise such right of offset, payment of principal of, or interest on,
this Note,  shall  immediately be reduced by the amount so offset and the amount
of interest due  hereunder  shall be reduced by the amount of interest  that has
accrued  on the amount of any  principal  so offset  from the date  Maker  shall
notify Holder of such indemnification  obligation. The exercise of this right of
offset shall be deemed a payment of principal  of, or interest on, this Note, in
the amount of the offset,  and in no event  shall the  exercise of this right of
offset ever be deemed nonpayment of principal of, or interest on, this Note.

         10. Notices.  Unless otherwise provided herein, all notices,  requests,
consents and demands shall be in writing and shall be delivered to the following
addresses:

         If intended for Holder, to:

         Tower Tech, Inc.
         11935 South I-44 Service Road
         P.O. Box 1838
         Oklahoma City, OK 73173
         Attn: Harold D. Curtis, Chief Executive Officer

         If intended to Maker, to:

         Aggreko Inc.
         4607 W. Admiral Doyle Drive
         New Iberia, LA 70580
         Attn: Terry Dressel,Vice President Finance

or to such other person or address as either party shall  designate to the other
from  time to time in  writing  forwarded  in like  manner.  All  such  notices,
requests, consents and demands shall be in writing and deemed to have been given
or made when (i)  delivered  personally;  (ii) sent by  first-class  U.S.  mail,
postage  prepaid;  or (iii)  sent by  overnight  courier,  guaranteeing  two-day
delivery.

         11.  Waiver.  No waiver or consent by Holder with respect to any act or
omission of Maker on one  occasion  shall  constitute  a waiver or consent  with
respect to any other act or omission by Maker on the same or any other occasion,
and no failure on the part of Holder to exercise and no delay in exercising  any
right  hereunder  shall  operate  as a waiver  thereof,  nor shall any single or
partial  exercise by Holder of any right  hereunder  preclude any other  further
right of exercise thereof or the exercise of any other right.

         12. Parties in Interest. All covenants and agreements contained in this
Note  shall   bind  and  inure  to  the   benefit   of  the   respective   legal
representatives,  heirs,  successors and assigns of the parties  hereto,  except
that neither Holder nor Maker may assign its rights hereunder  without the prior
written consent of the other party.


<PAGE>


         13.  Governing  Law.  THIS NOTE SHALL BE GOVERNED BY AND  CONSTRUED AND
ENFORCED IN ACCORDANCE WITH THE SUBSTANTIVE LAWS OF TEXAS, WITHOUT REGARD TO ITS
PRINCIPLES OF CONFLICTS OF LAWS.

         14. Jurisdiction and Venue. Any jurisdictional proceeding brought by or
against any of the parties to this Note, on any dispute arising out of this Note
or any matter  related  hereto shall be brought in the courts of Dallas  County,
State of Texas, and, by execution and delivery of this Note, each of the parties
to this Note  accepts  for itself the  exclusive  jurisdiction  and venue of the
aforesaid  courts,  and irrevocably  agrees to be bound by any judgment rendered
thereby in connection with this Note after  exhaustion of all appeals (or by the
appropriate appellate court if such appellate court renders judgment).

         15. Severability.  If any provision of this Note is held to be illegal,
invalid or unenforceable  under present or future laws effective during the term
of this  Note,  such  provision  shall be fully  severable;  this Note  shall be
construed and enforced as if such illegal,  invalid and unenforceable  provision
had never  comprised  a part  hereof and this Note shall not be  affected by the
illegal, invalid or unenforceable provision or by its severance from this Note.

         16.  Modification.  No  modification or waiver of any provision of this
Note shall be effective  unless such  modification or waiver shall be in writing
and executed by both Holder and Maker.

         17. No Demand, Presentment. Except as provided in Section 7 hereof, the
undersigned  and all parties  now or  hereafter  liable for the payment  hereof,
whether as endorser,  guarantor,  surety or otherwise,  severally  waive demand,
presentment  for payment,  notice of dishonor,  notice of intention to demand or
accelerate  payment  hereof,  protest  and notice of protest  and  diligence  on
collecting  or  bringing  suit  against  any  party  hereof,  and  agree  to all
extensions,  renewals, indulgences,  releases or changes which from time to time
may be granted by Holder and to all  partial  payments  hereon,  with or without
notice, before or after maturity.

         18. Attorneys' Fees. If this Note is placed in the hands of an attorney
for  collection,  or if it is collected  through  bankruptcy  or other  judicial
proceedings, Maker agrees to pay all expenses of collection,  including, but not
limited to, attorneys' fees, incurred by the Holder.


<PAGE>


         IN WITNESS  WHEREOF,  Maker has caused  this Note to be executed in its
corporate  name by a duly  authorized  representative  as of the date  first set
forth above.



MAKER:                         AGGREKO INC.



                               By: ss/GEORGE P. WALKER
                                   ----------------------------
                                   Printed Name: George P. Walker
                                   Title: Executive Vice President


                                By:ss/TERREL P. DRESSEL, JR.
                                   -----------------------------------
                                   Printed Name: Terrel P. Dressel, Jr.
                                   Title: Vice President Finance








                                SUPPLY AGREEMENT


         THIS SUPPLY AGREEMENT (this "Agreement") is made and entered into as of
the  4th  day of  December,  1998  by and  between  AGGREKO  INC.,  a  Louisiana
corporation  ("Aggreko") and TOWER TECH, INC., an Oklahoma  corporation  ("Tower
Tech").

                                   WITNESSETH:

         WHEREAS,  pursuant to that certain Asset Purchase  Agreement (herein so
called),  dated as of December  4, 1998 by and  between  Aggreko and Tower Tech,
Tower Tech has agreed to sell to Aggreko and Aggreko has agreed to purchase from
Tower Tech,  the Acquired  Assets (as such term is defined in the Asset Purchase
Agreement);

         WHEREAS,  Aggreko and Tower Tech are  executing  this  Agreement to set
forth the terms under which  after the closing of the Asset  Purchase  Agreement
Tower Tech will sell to Aggreko,  and  Aggreko  will  purchase  from Tower Tech,
certain products then constituting Tower Tech's industrial modular cooling tower
line,  which  product line is currently  described on Exhibit A attached  hereto
(collectively,  as modified in the future, the "Modular Cooling Tower Line"), in
accordance  with  the  terms,  conditions  and  provisions  set  forth  in  this
Agreement; and

         WHEREAS,  pursuant  to Section  3.08 of the Asset  Purchase  Agreement,
Aggreko and Tower Tech have agreed to execute and deliver this  Agreement on the
same date the closing of the sale of the Acquired  Assets as contemplated by the
Asset Purchase  Agreement is to occur;  and the mutual execution and delivery of
this Agreement is a condition  precedent to the obligations of Aggreko and Tower
Tech to consummate the purchase and sale of the Acquired  Assets as contemplated
by the Asset Purchase Agreement.

         NOW,  THEREFORE,  in  consideration  of the above premises,  the mutual
agreements  set forth  herein and other  good and  valuable  consideration,  the
receipt and  sufficiency  of which are hereby  acknowledged,  the parties hereto
hereby agree as follows:

         1. Sale and  Purchase.  Subject  to the terms  and  conditions  of this
Agreement, during the Term hereof (as such term is defined in Section 6 hereof),
Tower Tech will supply and sell to Aggreko, and Aggreko will purchase from Tower
Tech,  units,  or replacement  parts  currently or hereinafter  offered for such
units,  of the Modular  Cooling  Tower Line.  Aggreko  shall not be committed to
purchase any goods or services  except in such quantity and at such price as may
be set forth in a Purchase  Order Form (as  hereinafter  defined).To  the extent
that Tower Tech is able to produce  industrial modular cooling towers which meet
Aggreko's  specifications  and are available in the  quantities  and in the time
frames required by Aggreko,  Aggreko will purchase all of its  requirements  for
such products from Tower Tech.



<PAGE>



                                                                  

         (a) Purchase/Release Order:  Acceptance.  Aggreko shall deliver binding
purchase orders in substantially the form of Aggreko's standard form of purchase
order attached hereto as Exhibit B,  (collectively with any successor forms, the
"Purchaser  Order  Forms")  for Modular  Cooling  Tower  units,  subject to such
changes as may be mutually  agreed to by the parties.  Notwithstanding  anything
contained  in this  Agreement  to the  contrary,  in the event that there is any
inconsistency  between this Agreement and any Purchase Order Form, the terms set
forth in this Agreement shall be applied.

         Such Purchase Order Forms shall also indicate the date Aggreko  desires
to receive  shipment of the  Modular  Cooling  Tower Line units in such  orders.
Within a reasonable time after Tower Tech's receipt of each particular  Purchase
Order Form, but not to exceed  fourteen (14) days after receipt  thereof,  Tower
Tech will  acknowledge  in writing its receipt of such  Purchase  Order Form and
provide Aggreko with the estimated shipment date (the "Order Verification").

         (b) Filling Orders.  Tower Tech shall make  reasonable  efforts to fill
any and all  Purchase  Order Forms for units of the Modular  Cooling  Tower Line
received from Aggreko. If non-routine engineering or special order materials are
required for any Purchase  Order Form, the purchase price shall be that which is
consistent with the normal pricing of Tower Tech and the estimated shipment date
shall be based upon lead times published from time to time by Tower Tech.

         (c)  Substitutions;  Extras.  No  substitution of materials may be made
without Aggreko's written consent.  No charges for extras will be allowed unless
such extras have been ordered in writing by Aggreko and the price agreed upon by
the parties.

         2. Shipping Dates Estimated. Tower Tech shall notify Aggreko in writing
of any delay or change in a shipment  time as soon as  practicable  after  Tower
Tech becomes  aware of any such delay or change in shipment  time. If Tower Tech
becomes  unable to ship the  Modular  Cooling  Tower Line units  ordered  within
thirty (30) days of the  original  scheduled  shipment  date as reflected in the
Order Verification therefor,  Tower Tech will so notify Aggreko as soon as Tower
Tech becomes aware that it will be unable to ship the Modular Cooling Tower Line
unit(s) on the scheduled  shipment  date, but not later than five (5) days prior
to the scheduled  shipment date, and Aggreko may cancel the order for such units
at any time within ten (10) days of its receipt of written notice of such delay.

         3. Shipping.  The Modular  Cooling Tower Line units shall be shipped by
Tower Tech to Aggreko in accordance with the shipping instructions  contained in
the Purchase Order Forms for the products being shipped; provided, however, that
all such products will be shipped  F.O.B.,  uncrated to the Tower Tech facility.
The  responsibility  of Tower Tech for risk of loss shall cease upon delivery to
and receipt by a common  carrier,  and at such time such risk of loss shall pass
to Aggreko,  regardless of whether  freight  charges are prepaid and/or allowed.
Aggreko shall have the right to select the carrier for all shipments.



<PAGE>


         4.  Inspection and Testing.  All material and work in progress shall be
subject to inspection  and tests at all times and places and, when  practicable,
during  manufacture as Aggreko may reasonably direct. If any inspection or test,
whether preliminary or final, is made on Tower Tech's premises, Tower Tech shall
furnish, without additional charge, all reasonable facilities and assistance for
safe and  convenient  inspections  and tests  required by the  inspectors in the
performance of their duty. All  inspections and tests shall be performed in such
manner as will not  unreasonably  delay the work. All shipments shall be subject
to final  inspection  by Aggreko  after  receipt by Aggreko at  destination.  If
material  supplied  or work  performed  by Tower Tech is found to be  defective,
Aggreko  shall have the right to require  prompt  correction  thereof  either by
Tower Tech, at Tower Tech's risk and expense,  and upon prior  authorization  of
Tower  Tech,  by Aggreko.  Aggreko  may back charge  Tower Tech the costs of any
corrections made by Aggreko. If correction of such work is impracticable,  Tower
Tech shall bear all risk after notice of rejection and shall, if so requested by
Aggreko  and  at  Tower  Tech's  own  expense,   promptly   make  all  necessary
replacements.  If Tower Tech fails to make such replacements  promptly,  Aggreko
may by contract or otherwise, make the same and, charge to Tower Tech the excess
costs  incurred  by  Aggreko  in  connection  therewith.  Final  inspection  and
acceptance by Aggreko shall be conclusive  except for latent defects,  fraud, or
such gross mistakes as amount to fraud or for any rights  otherwise  provided in
this Agreement.

         5.  Purchase  Prices;  Terms of Payment.  The  purchase  prices for the
Modular  Cooling  Tower  Line units  purchased  by  Aggreko  hereunder  shall be
determined in the manner set forth on Exhibit C attached hereto. Notwithstanding
anything  contained in this Agreement to the contrary,  Tower Tech  acknowledges
and  agrees  that  Aggreko  shall  always be  offered  the "best  price" for its
purchases  of  Modular  Cooling  Tower Line  units,  excluding  special  pricing
arrangements  made with first time customers  that are  purchasing  seven (7) or
less Modular Cooling Tower Line units. Accordingly, if Tower Tech shall sell any
product  constituting  part of its  Modular  Cooling  Tower  Line  to any  other
customer at a price which is lower for the same or a greater  quantity  than the
purchase price for such product then in effect hereunder (a "Preferential  Third
Party Sale"), the purchase price of such product for Aggreko shall be reduced to
such  lower  price for (i) all  comparable  quantities  of  unshipped  orders of
Aggreko,  and (ii) all orders  thereafter  placed by Aggreko  during the six (6)
month period immediately following the date of the Order Verification,  or if no
Order  Verification  is  issued,  the  date of  invoice,  with  respect  to such
Preferential  Third  Party Sale.  In  addition,  Aggreko  shall be entitled to a
rebate equal to (i) the amount of the  difference  between any lower price for a
Preferential Third Party Sale and the price paid by Aggreko for the same Modular
Cooling  Tower  Line  product,  multiplied  by (ii) the  number of units of such
product  purchased  by  Aggreko  within the six (6) month  period  prior to such
Preferential  Third Party Sale.  During the Term of this  Agreement,  Tower Tech
shall make  available  to Aggreko such Tower Tech books,  records,  accounts and
personnel as Aggreko may  reasonably  request to enable  Aggreko to confirm that
Aggreko has been  properly  billed  hereunder.  Aggreko shall provide Tower Tech
with a refundable  deposit  equal to twenty  percent (20%) of the amount of each
order upon receipt of the Order  Verification  with respect to such order,  with
the balance  payable in full for each order  within  forty-five  (45) days after
receipt of Tower Tech's  invoice  with  respect to such order.  Tower Tech shall
invoice Aggreko upon shipment of any order.



<PAGE>


         6.  Term;  Termination.  Subject  to the terms of this  Section  6, the
"Term" of this Agreement will be the ten (10) year period commencing on the date
hereof.  In the event  either  party  fails to comply  with any of the terms and
conditions of this  Agreement,  the  non-breaching  party may give the breaching
party sixty (60) days' written notice specifying the breach,  and if such breach
fails to be cured within such period,  the  non-breaching  party may immediately
terminate this Agreement.

         7. Taxes.  The purchase prices for the Modular Cooling Tower Line units
do not include any state or local property,  sales or any other taxes. If any of
such taxes should be imposed by virtue of any sales of the Modular Cooling Tower
Line units  hereunder,  Aggreko  agrees to either  pay the same or to  reimburse
Tower Tech, as the case may be. Aggreko hereby  represents and warrants that the
Modular Cooling Tower Line units  purchased by Aggreko  hereunder will be leased
or rented by Aggreko.

         8. Goods and  Services  Warranty.  Tower Tech agrees that all goods and
services  provided  hereunder  shall be subject to the  warranties  described on
Exhibit D attached  hereto.  Tower Tech warrants  that neither the  manufacture,
use, or sale of such goods, nor the providing of such services,  nor any marking
or  labeling  associated   therewith  shall  infringe  any  patent,   trademark,
copyright,  or  constitute  unfair  competition.  Tower  Tech  hereby  agrees to
indemnify Aggreko against liability for any alleged  infringement of any patent,
trademark or copyright;  provided,  that, Aggreko shall notify Tower Tech within
ten (10) days after receipt by Aggreko of any claim of alleged  infringement  or
any notice of commencement of any suit based on such alleged infringement.

         9. Resale Limitation.  Except as provided in Section 10 hereof, Aggreko
may not acquire Modular Cooling Tower Line units for resale to any  unaffiliated
third party, but only for use by Aggreko and its affiliates in the cooling tower
leasing and rental business.  Notwithstanding the foregoing,  Aggreko shall have
the right to resell any and all used or reconditioned Modular Cooling Tower Line
units,  or any parts thereof,  which have been utilized by Aggreko in connection
with its cooling tower leasing and rental business.

         10. Exclusive Supply  Arrangement.  Tower Tech  acknowledges and agrees
that it shall not knowingly sell or agree to sell any product comprising part of
its  Modular  Cooling  Tower  Line to any  person or entity  which  directly  or
indirectly  intends to lease or rent such Modular  Cooling  Tower Line  product,
except for those licensees of Tower Tech set forth on Exhibit E attached hereto.
Moreover,  Tower  Tech  hereby  appoints  Aggreko  as  its  exclusive  worldwide
distributor of those products comprising the Modular Cooling Tower Line for sale
to persons and  entities  which intend to use such  Modular  Cooling  Tower Line
products in connection with the leasing or rental of industrial  cooling towers.
Tower Tech shall  promptly  transfer to Aggreko any and all sales leads obtained
by Tower Tech with  respect to any proposed  purchase of any product  comprising
part of the Modular Cooling Tower Line by any person or entity which directly or
indirectly  intends to use such product in connection with the leasing or rental
of industrial cooling towers.



<PAGE>


         11. Compliance with Laws. Tower Tech's  performance of work pursuant to
this  Agreement  or a  Purchase  Order  Form and all  products  to be  delivered
hereunder  or  thereunder  shall be in  accordance  with any and all  applicable
executive  orders,  federal,  state,  municipal  and local laws and  ordinances,
rules, orders, requirements, and regulations thereunder. Such federal laws shall
include  but shall not be limited to the Fair Labor  Standards  Act of 1938,  as
amended,  and the  regulations  and orders of the United  States  Department  of
Labor.

         12. Severability.  Wherever possible,  each provision of this Agreement
and each  Purchase  Order  Form  shall be  interpreted  in such  manner as to be
effective  and valid under  applicable  Texas law, and if any  provision of this
Agreement or any Purchase  Order Form shall be  prohibited  or be invalid  under
applicable  Texas law, such provision shall be ineffective to the extent of such
prohibition or invalidity  without  invalidating the remainder of such provision
or the remaining provisions of this Agreement or the Purchase Order Form.

         13.  Equipment  Specifications.   Tower  Tech  reserves  the  right  to
discontinue  manufacturing  any or all of the Modular  Cooling  Tower Line units
upon one hundred and twenty (120) days written notice to Aggreko and without any
liability whatsoever to Aggreko. Tower Tech further reserves the right to modify
the design  specifications  of any Modular  Cooling  Tower Line unit;  provided,
that,  Tower  Tech  submits  to Aggreko a written  description  of any  material
modification  which Tower Tech plans to incorporate to any Modular Cooling Tower
Line  unit  and the  approximate  date any such  material  modification  will be
effective.

         14. Customer Assurance and Service Literature.  Tower Tech will provide
Aggreko,  at no charge,  all  standard  technical  information  and  photographs
(limited to "glossies" of those  photographs  used in  preparation of Tower Tech
literature) considered necessary by Aggreko to prepare service manuals,  service
or  product  bulletins,   parts  price  lists,   wiring  diagrams,   application
literature,  product specification literature,  engineering literature and parts
logs to cover all Modular  Cooling  Tower Line units  purchased  by Aggreko from
Tower  Tech.  Tower Tech  shall use its  reasonable  efforts  to timely  provide
answers to technical  service and applications  questions raised by Aggreko with
respect to any Modular Cooling Tower Line unit.

         15. Independent Contractor. Each party hereto is, and at all times will
remain, an independent contractor and will not represent itself to be the agent,
joint  venturer,  or partner of the other party  hereto or to be related to such
other party. No representations  will be made or acts done by either party which
would  establish  any  apparent   relationship  of  agency,   joint  venture  or
partnership.  Further,  each party  acknowledges  and agrees that this Agreement
does not  create a  franchise  or any  business  opportunity  rights  under  any
federal,  state or local law. If either party's obligations hereunder require or
contemplate  the  providing  of  services on the other  party's  property or the
property of the other party's customers by such party's employees, persons under
contract  with such party,  or persons  within the  control of such party,  such
party shall  provide such services only as an  independent  contractor,  and the
persons  providing  such  services  shall not be  considered  the other  parties
employees or agents. Each party shall maintain policies of Comprehensive General
Liability  Insurance,   Auto  Liability  Insurance  and  Worker's   Compensation
Insurance  with such  companies and with limits of coverage  adequate to protect
the other party in respect to a party's duties and obligations hereunder.


<PAGE>


         16. Force Majeure.  Neither party hereto shall be  responsible  for the
failure or the delay in the performance of any of its  obligations  hereunder by
reason of force majeure,  including,  but not limited to,  industrial  disputes,
riots, mobs, fires,  floods,  wars,  shortage of labor, power, fuel, material or
transportation,  regulations  or orders of any government or its agencies or any
other  circumstances  beyond  the  reasonable  control of such  party.  Upon the
occurrence  of any of the  circumstances  described in the  foregoing  sentence,
Tower Tech shall,  to the extent  practicable,  use its best efforts to allocate
its available production,  deliveries,  services, raw materials and resources to
the  production  of Modular  Cooling Tower Line units for Aggreko at the time of
any such events.

         17. Notices. All notices,  requests and other communications under this
Agreement  shall be in  writing  (including  a writing  delivered  by  facsimile
transmission)  and  shall  be  deemed  to have  been  duly  given  if  delivered
personally,  or sent by either  certified or  registered  mail,  return  receipt
requested, postage prepaid, by overnight courier guaranteeing next day delivery,
or by facsimile, addressed as follows:

         (a)      If to Tower Tech:

                  Tower Tech, Inc.
                  11935 South I-44 Service Road
                  P.O. 1838
                  Oklahoma City, OK 73173
                  Attn: Harold D. Curtis, Chief Executive Officer
                  Facsimile No.: (405) 979-2131

or at such other address or facsimile number as Tower Tech  may have advise
Aggreko in writing; and

         (b)      If to Aggreko:

                  Aggreko Inc.
                  4607 W. Admiral Doyle Drive
                  New Iberia, LA 70560
                  Attn: Terry Dressel, Vice President Finance
                  Facsimile No.: (318) 367-0870

or at such other  address or facsimile  number as Aggreko may have advised Tower
Tech in writing.

All such notices, requests and other communications shall be deemed to have been
received on the date of delivery thereof, if delivered by hand, on the third day
after the mailing thereof, if mailed, on the next day after the sending thereof,
if by overnight courier, and when receipt is acknowledged, if faxed.



<PAGE>


         18. Waivers and Amendments.  No amendment or waiver of any provision of
this  Agreement,  nor consent to any  departure  therefrom,  shall be  effective
unless the same be in writing  and  signed by each party  hereto,  and then such
waiver or consent shall be effective  only in the specific  instance and for the
specific  purpose for which given. No failure on the part of any party hereto to
exercise,  and no delay in exercising,  any right  hereunder  shall operate as a
waiver thereof;  nor shall any single or partial exercise of any right hereunder
preclude  any other or further  exercise  thereof or the  exercise  of any other
right. The remedies  provided in this Agreement are cumulative and not exclusive
of any remedies provided by law.

         19. Binding  Effect.  This Agreement shall be binding upon and inure to
the benefit of the parties hereto and their respective  successors and permitted
assigns.

         20.  Assignment.  Neither  party  shall have any right to  transfer  or
assign its  interest or rights in this  Agreement  or delegate  its  obligations
under this  Agreement  without  the prior  written  consent  of the other  party
hereto.

         21.  Change in Control.  In the event of the  occurrence of a Change in
Control (as hereinafter  defined) with respect to Tower Tech, Aggreko shall have
the right, in its sole  discretion,  to either (i) terminate this Agreement upon
providing  Tower Tech with at least thirty (30) days written notice of Aggreko's
intention to terminate this Agreement,  or (ii) continue the performance of this
Agreement;  provided,  that,  the  surviving  or  resulting  entity or  entities
involved in any such Change in Control transaction shall specifically assume, as
a co-obligor with Tower Tech and as a condition to the effectiveness of any such
Change in Control transaction, the obligations of Tower Tech hereunder.

         For purposes of this Agreement,  a Change in Control shall be deemed to
have  occurred  if (i) a majority of the voting  capital  stock in Tower Tech is
acquired by a third party or third  parties,  other than those  persons  holding
shares of Tower Tech's  capital  stock on the date of this  Agreement,  or their
respective  affiliates,  (ii) Tower Tech enters  into a merger or  consolidation
with  another  corporation  or  business  entity in which  Tower Tech is not the
surviving  entity,  (iii)  Tower Tech  becomes a  majority-owned  subsidiary  of
another corporation, (iv) a change during any period of two consecutive years of
a  majority  of the  members  of the Board of  Directors  of Tower  Tech for any
reason,  unless the  election,  or the  nomination  for election by Tower Tech's
stockholders,  of each director was approved by a majority vote of the directors
then still in office who were  directors at the  beginning  of such period,  (v)
more than fifty  percent  (50%) of the assets of Tower Tech are  transferred  or
sold,  or  (vi)  all  or  substantially   all  of  the  assets   comprising  the
factory-assembled cooling tower division are transferred or sold.

         22.  GOVERNING LAW. THIS  AGREEMENT,  AND THE RIGHTS AND OBLIGATIONS OF
THE  PARTIES  HERETO,  SHALL  BE  GOVERNED  BY AND  CONSTRUED  AND  ENFORCED  IN
ACCORDANCE  WITH THE SUBSTANTIVE  LAWS OF THE STATE OF TEXAS,  WITHOUT REGARD TO
ITS PRINCIPLES OF CONFLICT OF LAWS.



<PAGE>


         23. Arbitration. The parties shall use their respective best efforts to
settle amicably any disputes,  differences or controversies  arising between the
parties out of or in connection with or in respect of this  Agreement.  However,
if not so settled  then the same shall be submitted  to  arbitration  and to the
fullest extent  permitted by law, be solely and finally  settled by arbitration.
The  arbitration  proceeding  shall  be held in  Dallas,  Texas,  and  shall  be
conducted in accordance  with the commercial  arbitration  rules of the American
Arbitration Association and to the extent not inconsistent therewith,  the Texas
General  Arbitration Act, Title 10, Vernon's Ann. Civ. Stat.  Judgement upon the
award  rendered  by  the   arbitrators  may  be  entered  in  any  court  having
jurisdiction, or application may be made to such court for a judicial acceptance
of the award and any order of enforcement as the case may be.

         24. Number and Gender. Whenever herein the singular number is used, the
same shall include the plural where  appropriate,  and words of any gender shall
include each other gender where appropriate.

         25.  Captions.  The captions,  headings and  arrangements  used in this
Agreement  are for  convenience  only  and do not in any way  affect,  limit  or
amplify the provisions hereof.

         26. Entirety.  This Agreement  contains the agreement and understanding
among the parties with respect to the matters  addressed  herein and  supersedes
all  prior  representations,   inducements,  promises  or  agreements,  oral  or
otherwise, which are not embodied herein.

         27. Third Party  Beneficiaries.  Nothing contained  herein,  express or
implied,  is intended to confer upon any person or entity other than the parties
hereto and their  successors  in interest  and  permitted  assigns any rights or
remedies under or by reason of this Agreement.



<PAGE>


         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the date first above written.


AGGREKO:                      AGGREKO INC.


                                      By:  ss/GEORGE P. WALKER
                                         -----------------------------------
                                         Printed Name: George P. Walker
                                         Title: Executive Vice President


                                      By  ss/TERRELL P. DRESSEL, JR.
                                         ----------------------------------
                                         Printed Name: Terrel P. Dressel, Jr.
                                         Title: Vice President Finance


TOWER TECH:                    TOWER TECH, INC.



                                       By  ss/HAROLD D. CURTIS
                                          ----------------------------------
                                          Printed Name: Harold D. Curtis
                                          Title: Chief Executive Officer





<PAGE>



                                    EXHIBIT D

                               PRODUCT WARRANTIES

         Tower Tech  warrants  for a period of one (1) year that  cooling  tower
workmanship  and  materials,  excluding  defects in  pigmentation  and  cosmetic
deterioration of pultruded or  injection-molded  parts, shall be free of defects
with respect of any materials manufactured by, and any workmanship performed by,
Tower Tech. Tower Tech will replace or repair, at Tower Tech's  discretion,  any
such defective  workmanship or defective  materials within thirty (30) days of a
valid warranty claim by Aggreko.

         Tower Tech's warranty is subject to the following  conditions:  (a) For
any warranty  claim,  Tower Tech must  receive from Aggreko  within the warranty
period written notice  describing  the defect or defects.  (b)Aggreko  shall not
have, without Tower Tech's written permission,  attempted to correct the defect.
(c) Aggreko shall have operated and maintained the equipment in accordance  with
Tower Tech's published  operating  instructions.  (d) The defect has been caused
solely by faulty  materials or  workmanship  for which Tower Tech is responsible
and is not due to such things as  accident,  alteration,  erosion,  corrosion or
other physical  deterioration caused by exposure to the elements,  an abnormally
corrosive  or abrasive  use  environment,  normal wear and tear,  or from abuse,
neglect or operation of the equipment in conflict with  prevailing  standards of
the cooling tower industry. (e) All liability of Tower Tech shall be limited, at
Tower Tech's sole option,  to the repair and  replacement of defective parts and
Tower Tech shall have no liability  for  consequential  or other  damages or for
transportation  charges  relating to repaired,  replaced or defective parts. (f)
This  warranty  is not  transferable.  Tower  Tech  makes  no  warranty  for any
materials and equipment  manufactured by parties other than Tower Tech. Benefits
to Tower Tech, if any, with respect to materials and equipment  manufactured  by
other parties,  including, but not limited to, hardware, fans, drift eliminators
fill media, float valves,  motors,  basin heaters,  electrical  distribution and
control panels, pumps, heat exchangers,  water filtration  equipment,  fan hubs,
pipe and pipe  fittings,  but  furnished to Tower Tech,  are hereby  assigned to
Aggreko.

         Tower Tech's liability  hereunder is expressly limited as follows:  (a)
The warranties set forth above are Aggreko exclusive remedies against Tower Tech
with respect to the manufacture,  operation or performance of the cooling towers
and are in lieu of any other  warranties  or  guarantees,  express  or  implied,
including  the  warranties  of  merchantability  and  fitness  for a  particular
purpose.  (b) Tower Tech shall not be liable to Aggreko  for any  consequential,
indirect or liquidated damages,  including,  but not limited to, loss of profits
or revenue,  loss of use of  equipment,  costs of  replacement  cooling  towers,
additional expenses incurred in the use of equipment or facilities, or claims of
customers of Aggreko. The disclaimer shall apply to consequential  damages based
upon any cause of action asserted  against Tower Tech,  including claims arising
out of breach of warranty,  expressed or implied, guarantee,  product liability,
negligence,  personal  injury or any other clam pertaining to the performance or
non-performance  of this  contract  by Tower  Tech.  (c) Tower Tech shall not be
responsible for handling or  modification  of the cooling tower by Aggreko.  (d)
Except  as  otherwise  set  forth  in  this  Agreement,  no  statement,  remark,
agreement,  representation,  promise or understanding,  oral or written, made by
Tower Tech or any  agent,  representative  or  employee  which is not  contained
herein will be recognized or enforceable or binding upon Tower Tech.


                                       D-1


<PAGE>




                                    EXHIBIT E

                               PERMITTED LICENSEES


1.       License Agreement dated as of September 1, 1995  by  and  between Tower
         Tech, Inc. and Shriram Cooling Towers Ltd.

2.       License  Agreement  dated as of December 29, 1995 by and between  Tower
         Tech,  Inc.  and Ilmed  Impianti  S.r.L.,  as amended  by that  certain
         License Extension and Amendment Agreement dated as of October 31, 1998.

3.       License Agreement dated as of [September 10, 1997] by and between Tower
         Tech, Inc. and Industrial Water Cooling (PTY) LTD.
































                                       E-1


<PAGE>







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