RENTECH INC /CO/
8-K, 1999-06-24
PAINTS, VARNISHES, LACQUERS, ENAMELS & ALLIED PRODS
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                   U.S. 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

  Date of Report (Date of earliest event reported) June 10, 1999

                                 RENTECH, INC.
            (Exact name of registrant as specified in its charter)

  Colorado                      0-19260                       84-0957421
  (State of incorporation)      (Commission File Number)   (IRS Employer
                                                      Identification No.)

  1331 17th Street, Suite 720, Denver, Colorado 80202              80202
  (Address of principal executive offices)                     (Zip Code)

                                (303) 298-8008
            (Registrant's telephone number, including area code)

                                     N/A
       (Former name or former address, if changed since last report)


  Item 2.  Acquisition or Disposition of Assets.

       The Company acquired the assets of two Oklahoma corporations,
  Petroleum Mud Logging, Inc. and Petroleum Well Logging, Inc., by purchase
  on June 10, 1999.  The acquisition was made by Rentech's wholly-owned
  subsidiary, Petroleum Mud Logging, Inc., a Colorado corporation.  The
  assets acquired primarily consisted of well logging vehicles, well logs,
  and related instruments.  The purchase price of $1,205,000 was paid by
  $550,000 in cash, 50,000 shares of Rentech's restricted common stock,
  Rentech's promissory note in the amount of $200,000 payable with interest
  at 9.75% on June 1, 2000, and Rentech's promissory note in the amount of
  $405,000 payable with interest at 9.75% in equal monthly installments,
  with the entire balance due on June 1, 2001.  Rentech also assumed a
  promissory note in the approximate balance of $70,000.  The assets were
  purchased at a bargained price determined by arm's-length negotiations.
  The sellers had no material relationship with the Company or any of its
  officers or directors or their associates.  The funds for that part of
  the purchase price paid in cash were Company funds obtained through
  private placement of sales of shares of the Company's convertible
  preferred stock.  The assets will be used by Rentech in the business of
  providing petroleum and natural gas well mud logging services to the oil
  and gas industry.





   <PAGE>

                                                      PAGE 2

  Item 5.  Other Events.


       Rentech's annual meeting of shareholders was held on June 16, 1999.
  At the meeting the following persons were re-elected directors with the
  following votes:

  <TABLE>
  <CAPTION>
                              Elected to      Votes          Votes
       Nominee                Term Ending     For            Withheld
       -------                -----------     -----          --------
       <S>                    <C>             <C>            <C>
       John P. Diesel         2002            34,796,163     773,397
       Dennis L. Yakobson     2002            34,932,490     637,070
  </TABLE>

       The shareholders also adopted a proposal to authorize the board of
  directors of Rentech, for one year from the date of the annual meeting
  (June 16, 2000), to effect, in its discretion, a reverse stock split of
  the outstanding shares of Rentech, Inc.'s common stock on the basis of
  one share for each five shares outstanding at the time of the reverse
  stock split.  The voting was 27,608,159 shares for the proposal,
  7,820,691 against, and 140,710 shares abstained.

       The Nasdaq Listings Qualifications Panel has notified Rentech that
  Rentech's common stock must meet Rentech's minimum closing bid
  requirements on or before July 30, 1999 in order for the stock to
  continue to be listed on The Nasdaq SmallCap Market after that date.  The
  July 30 deadline is an extension of the original deadline of June 28,
  1999.  The exemption granted by Nasdaq now requires that , for continued
  listing, on or before July 30, 1999, Rentech must demonstrate a closing
  bid price of at least $1.00 per share, and immediately thereafter, the
  stock must have a closing bid price at or above $1.00 per share for a
  minimum of ten consecutive trading days.


  Item 7.  Financial Statements and Exhibits.

       No financial statements or exhibits for the assets acquired by the
  Company through its wholly-owned subsidiary, Petroleum Mud Logging, Inc.,
  are required.

       The agreement for purchase of the assets is filed as Exhibit 99.1 to
  this Current Report on Form 8-K.





   <PAGE>

                                                      PAGE 3

                                  SIGNATURE

       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.

                                      RENTECH, INC.


                                 By:  (signature)
                                      ------------------------------------
                                      James P. Samuels, Vice President,

  Date: June 23, 1999



   <PAGE>

                                                      PAGE 1

                    AGREEMENT FOR PURCHASE AND SALE OF ASSETS


       THIS AGREEMENT FOR SALE AND PURCHASE OF ASSETS (Agreement) is made
  and entered into as of ---------------, 1999, by and among PETROLEUM MUD
  LOGGING, INC., an Oklahoma corporation (Mud Logging); and PETROLEUM WELL
  LOGGING, INC., an Oklahoma corporation (Well Logging) (collectively
  Sellers); with PETROLEUM MUD LOGGING, INC., a Colorado corporation, a
  wholly-owned subsidiary of Rentech, Inc. (Subsidiary); and RENTECH, INC.,
  a Colorado corporation (Rentech).


                             BACKGROUND CIRCUMSTANCES:

       The following circumstances precede the execution of this Agreement:

       Mud Logging owns and operates a business with headquarters located
  at Oklahoma City, Oklahoma that is engaged in logging drill hole mud.
  Well Logging owns and operates a business located at Oklahoma City,
  Oklahoma that is engaged in logging drill hole wells.

       Both Well Logging and Mud Logging are desirous of selling their
  respective businesses (Businesses) and all of the assets used in their
  respective businesses, except as otherwise provided herein.  Rentech and
  Subsidiary desire to purchase and acquire the Businesses and all of the
  assets used in the Businesses, except as otherwise provided herein, and
  to assume only those liabilities specified in this Agreement.

       NOW, THEREFORE, in consideration of the background circumstances and
  the mutual covenants and agreements herein set forth, the receipt and
  sufficiency of which are hereby acknowledged, the parties hereto agree as
  follows:


                                    ARTICLE I.
                                SALE AND PURCHASE

       1.1  Sale of Assets.  Subject to the terms and conditions set forth
  in this Agreement, Well Logging and Mud Logging (Sellers) shall sell,
  convey, transfer, assign and deliver to Subsidiary, and Subsidiary shall
  purchase all of the right, title and interest of Well Logging and Mud
  Logging in and to their respective businesses and the assets (the
  Purchased Assets) used in their respective Businesses as a going concern
  including, but not limited to, the following:


   <PAGE>

                                                      PAGE 2

       (a)  The real property known as the warehouse and depot building
       which is identified by street address of 5600 S.W. 11th, Oklahoma
       City, Oklahoma, together with all easements and other appurtenances
       thereto, all improvements thereon and all attached fixtures (the
       Real Property).

       (b)  All tangible personal property of all kinds used in the
       Businesses (the Personal Property) including all of the machinery,
       furniture, fixtures and equipment owned by Well Logging and Mud
       Logging at 5600 S.W. 11th, Oklahoma City, Oklahoma, and 6418-B
       North Santa Fe, Oklahoma City, Oklahoma 73116, or elsewhere, as set
       forth on Schedule 1.1(b), except the Personal Property identified on
       Schedule 1.1(c) as Exempt Personal Property;

       (c)  All trade secrets, know-how, proprietary rights, patents and
       patents pending, product formulations, copyrights, trademarks, trade
       names (including "Petroleum Well Logging," "Petroleum Mud Logging"),
       and logos, patterns, designs, proprietary rights and all other
       intellectual property rights of whatever type used in the
       businesses;

       (d)  All inventory, supplies, materials, expendables and packaging
       on order or on hand owned by Well Logging and Mud Logging and set
       forth on Schedule 1.1(b);

       (e)  All contracts, commitments, purchase orders and sales orders;

       (f)  Mud Logging's and Well Logging's finished products, goods and
       work in process, including oil and gas well hole logs, scout tickets
       and mud logs;

       (g)  All automotive vehicles used in the Businesses, except as
       otherwise indicated in Section 1.7;

       (h)  Use of the telephone numbers used by the Businesses;

       (i)  All goodwill of the Businesses as a going concern, including
       all franchises, licenses, registrations, files, papers, books of
       account, sales and marketing records, customer lists, personnel
       files and all other books and records and files of any kind or
       description relating to the Businesses.

  The Purchased Assets shall include any assets like those described in
  this section that are acquired hereafter and prior to the Closing (as
  hereinafter defined) except for those assets transferred or disposed of
  in the ordinary course of business after the date of this Agreement.





   <PAGE>

                                                      PAGE 3

       1.2  Purchase Price.  The aggregate purchase price (Purchase Price)
  to be paid by Rentech and Subsidiary for the Purchased Assets will be
  $1,205,000.  The Purchase Price shall be allocated among the Purchased
  Assets as shown on Schedule 1.2.  The Purchase Price shall be paid as
  follows:

            1.2.1  Well Logging Purchase Price.  The purchase price for the
            Purchased Assets owned by Well Logging shall be $600,000.
            Rentech will pay $550,000 in cash or other immediately
            available funds, $25,000 by issuance of 50,000 shares of the
            restricted and unregistered shares of Rentech's common stock to
            Hoyt L. Hudspeth and $25,000 by issuance of 50,000 shares of
            the restricted and unregistered shares of Rentech's common
            stock to Joseph Peters.  The shares of Rentech's common stock
            shall be deemed to have a value of $.50 each.

            1.2.2  Mud Logging Purchase Price.  The purchase price for the
            Purchased Assets owned by Mud Logging shall be paid pursuant to
            two promissory notes in the principal amounts of $200,000 (Note
            I) and $405,000 (Note II), both of which shall be issued by
            Subsidiary at Closing.  Note I and Note II shall be made in the
            form of the promissory note attached as Exhibit 1.2.2.

                 1.2.2.1  Terms of Note I.  Note I shall have a term of one
                 year and bear interest at a rate equal to the prime rate
                 described in the Wall Street Journal, Western Edition, for
                 the date that is five business days before the date of
                 closing, plus two percent (2%).  Note I shall be
                 guaranteed by Rentech pursuant to the Guaranty Agreement
                 attached hereto as Exhibit 1.2.2.1.  In addition, Note I
                 shall be secured by all assets purchased by Subsidiary
                 from Well Logging and Mud Logging pursuant to this
                 Agreement.

                 1.2.2.2  Terms of Note II.  Note II shall have a term of
                 two years over which payments are payable monthly and bear
                 interest at a rate equal to the prime rate described in
                 the Wall Street Journal, Western Edition, for the date
                 that is five business days before the date of closing,
                 plus two percent (2%).  Note II shall be guaranteed by
                 Rentech pursuant to the Guaranty Agreement attached hereto
                 as Exhibit 1.2.2.1.  In addition, Note II shall be secured
                 by all assets purchased by Subsidiary from Well Logging
                 and Mud Logging pursuant to this Agreement.

                 1.2.2.3  Cross Default.  A default by Rentech or
                 Subsidiary under either Note I or Note II shall be a
                 default under both Note I and Note II.


   <PAGE>

                                                      PAGE 4

       1.3  Assumption of Liabilities.  Rentech and Subsidiary will not
  assume any debts, obligations, duties or liabilities of Sellers
  (Liabilities) other than  (i) Liabilities, the assumption of which is
  necessary for the continued operation of the Businesses, as determined by
  Rentech and Subsidiary, accruing after the Closing pursuant to contracts
  approved by Rentech and Subsidiary in writing, (ii) Liabilities expressly
  assumed by Rentech and Subsidiary in their sole discretion, and (iii) the
  following Liabilities:

            1.3.1  Subsidiary and Rentech shall assume the balance of the
       promissory note payable to M. H. Burton Construction Company, which
       is secured by a mortgage recorded in Book 7105, Page 1244, against
       the warehouse and depot building located at 5600 S.W. 11th, Oklahoma
       City, Oklahoma, and shall be responsible for payment of the note.
       The assumption shall be accomplished by Subsidiary's monthly
       transfer of the mortgage payments to either Mud Logging or Hoyt L.
       Hudspeth, (whichever is presently liable on the mortgage), who
       agrees to timely pay the mortgage amount to the mortgagee as and
       when due.  This agreement shall be evidenced by a separate writing
       executed by Hoyt L. Hudspeth, Mud Logging and Subsidiary.
       Subsidiary and Rentech shall mortgage the building to secure the
       obligations created herein, and further agree that should there be
       any default, and upon notification to Hoyt L. Hudspeth, Hoyt L.
       Hudspeth shall be entitled to immediately seek a receiver and
       temporary restraining order allowing him to take possession of the
       property by the receiver during any litigation.  Subsidiary and
       Rentech will endeavor to have Hoyt L. Hudspeth's name as an obligor
       removed from the promissory note, but if they are unable to do so,
       they will hold harmless and indemnify him from any liability on the
       promissory note which is secured by the shop building.  The current
       balance of the promissory note is approximately $70,000; and

            1.3.2  The Liabilities described in Section 1.7 as the
       equipment loan.

       1.4  Employment Contracts.  The Sellers shall employ Hoyt L.
  Hudspeth, Ronald Ray Hudspeth and Tammy Silva, pursuant to the terms and
  conditions of the employment contracts attached hereto as Exhibit 1.4.

       1.5  Purchase of Businesses.  The purchase of the Businesses shall
  be subject to the following terms and conditions:

            1.5.1  Cost of Appraisal.  Cost of any appraisal to be obtained
       after the date of this Agreement shall be timely paid by Rentech or
       Subsidiary.





   <PAGE>

                                                      PAGE 5

            1.5.2  Evidence of Title.  Sellers shall furnish to Rentech, a
       current commitment for owner's title insurance policy pertaining to
       the Real Property in an amount equal to the purchase price, on or
       before five days before Closing (Title Deadline).  The expense of
       the title insurance policy shall be divided equally between Sellers
       and Rentech.  The commitment shall constitute a binding obligation
       of the title insurance company to insure fee simple title in
       Subsidiary, with no exceptions except real property taxes due for
       the year of Closing and the lien of the mortgage recorded in Book
       7105 at Page 1244 in favor of M.H. Burton Construction Company, upon
       Closing in the amount of the Purchase Price allocated to the Real
       Property upon Closing in the amount allocated to the Real Property.
       When the title insurance commitment is furnished, Rentech may
       require that copies of instruments (or abstracts of instruments)
       listed in the schedule of exceptions (Exceptions) in the title
       insurance commitment also be furnished to Rentech at Sellers'
       expense.  This requirement shall pertain only to instruments shown
       of record in the office of the clerk of the designated county or
       counties.  The title insurance commitment, together with any copies
       or abstracts of instruments furnished pursuant to this Section,
       constitute the title documents (Title Documents).  Rentech or
       Rentech's designee, must request Well Logging or Mud Logging or
       both, in writing, to furnish copies or abstracts of instruments
       listed in the schedule of exceptions no later than five calendar
       days after Title Deadline.  Sellers will pay the premium for the
       title insurance policy at Closing and have the title insurance
       policy delivered to Subsidiary as soon as practical after Closing.

            1.5.3  Title Review.  Rentech shall have the right to inspect
       the Title Documents pertaining to the Real Property.  No written
       notice by Rentech of unmerchantability of title or other
       unsatisfactory title conditions need be given as to Exceptions to
       title, including other liens, not permitted according to Section
       1.5.2.  Written notice by Rentech of additional grounds of
       unmerchantability of title or of any other unsatisfactory title
       condition shown by the Title Documents may be signed by or on behalf
       of Rentech and given to Sellers on or before five calendar days
       after Title Deadline, or within five calendar days after receipt by
       Rentech of any Title Documents or endorsements adding new Exceptions
       to the title commitment together with a copy of the Title Document
       adding new Exceptions to title.

           1.5.4  Matters Not Shown by the Public Records.  Sellers shall
       deliver to Rentech, on or before the Title Deadline set forth in
       Section 1.5.2, true copies of all leases in Sellers' possession
       pertaining to the Real Property, if any, and shall disclose to




   <PAGE>

                                                      PAGE 6

       Rentech all easements, liens or other title matters not shown by the
       public records of which Sellers have actual knowledge.  Rentech
       shall have the right to inspect the Real Property to determine if
       any third parties has any right to the Real Property not shown by
       the public records (such as an unrecorded easement, unrecorded
       lease, or boundary line discrepancy).  Written notice of any
       unsatisfactory conditions disclosed by Sellers or revealed by such
       inspection shall be signed by or on behalf of Rentech and given to
       Sellers on or before five days after the Title Deadline.  If Sellers
       do not receive Rentech's notice by said date, Rentech agrees to
       accept title subject to such rights, if any, of third parties of
       which Rentech has actual knowledge.

            1.5.5  Right to Cure.  If Sellers receive notice of
       unmerchantability of title or any other unsatisfactory title
       conditions pertaining to the Real Property as provided in Sections
       1.5.3 and 1.5.4 above, Sellers shall use reasonable effort to
       correct said unsatisfactory title conditions prior to the date of
       Closing.  If Sellers fail to correct said unsatisfactory title
       conditions on or before the date of closing, this contract shall
       then terminate; provided, however, Rentech may, by written notice
       received by Sellers, on or before closing, waive objection to said
       unsatisfactory title conditions.

           1.5.6  Transfer of Title.  Subject to tender or payment at
       Closing as required herein and compliance by Rentech and Subsidiary
       with the other terms and provisions hereof, Sellers shall execute
       and deliver a good and sufficient general warranty deed to
       Subsidiary, on Closing, conveying the Real Property free and clear
       of all taxes except the general taxes for the year of Closing, and
       subject to easements, rights of way, reservations, covenants,
       conditions, restrictions, and zoning ordinances of record accepted
       in writing by Rentech.  Title shall be conveyed free and clear of
       all liens for special improvements installed as of the date of
       Rentech's signature hereon, whether assessed or not; except  (i)
       distribution utility easements (including cable TV),  (ii)
       those matters reflected by the Title Documents accepted by Rentech
       in accordance with subsection 1.5.3, and  (iii) those rights, if
       any, of third parties in the Real Property not shown by the public
       records in accordance with subsection 1.5.4.

            1.5.7  Payment of Encumbrances.  Any encumbrance required to be
       paid by Sellers shall be paid at or before Closing from the proceeds
       of this transaction or from any other source.

            1.5.8  Real Property Closing Services.  Rentech, Subsidiary and
       Sellers shall pay, in certified funds or other immediately available




   <PAGE>

                                                      PAGE 7

       funds, their respective closing costs and all other items required
       to be paid respectively by them at Closing, except as otherwise
       provided herein.  Rentech, Subsidiary and Sellers shall sign and
       complete all customary or required documents at or before Closing.
       One-half of the fees for real estate closing services shall be paid
       at Closing by Rentech or Subsidiary and one-half shall be paid by
       Sellers.  Any sales and use tax that may accrue because of this
       transaction shall be collected by Sellers but paid by Subsidiary.

       1.6  Lease of Building.  Subsidiary or Rentech shall lease from the
  Hudspeths the building at 6418-B North Santa Fe, Oklahoma City, Oklahoma
  73116 at a rate of $10.00 per square foot per year (approximately 1,930
  square feet) on a net-net-net basis for a two-year lease term.  If
  Subsidiary is the tenant, Rentech shall guarantee the lease.  The Lease
  will be executed and delivered at Closing.

       1.7  Vehicles.  All vehicles that are being transferred to
  Subsidiary and Rentech as to which any encumbrances remain unpaid, will
  be assumed by Subsidiary and Rentech, and Hoyt L. Hudspeth will be held
  harmless by both from payment of the same.  Indebtedness on any vehicles
  that are specifically reserved prior to Closing, and currently being
  driven, by Hoyt L. Hudspeth and his family will remain the responsibility
  of Hoyt L. Hudspeth and his family.  At Closing, Ruthe Hudspeth and Hoyt
  L. Hudspeth's daughter's vehicles, identified as a --------------- model
  --------------------, and a --------------- model --------------------,
  will be transferred to Ruthe Hudspeth and Hoyt Hudspeth's daughter,
  respectively.  They will be responsible for the remainder of the loans
  payable on those vehicles.  Hoyt L. Hudspeth's vehicle, identified as a
  ---------------- model --------------------, will remain as part of Mud
  Logging's assets for the one-year period during which Hoyt L. Hudspeth is
  training Bill Williamson.  The Subsidiary or Rentech will make or
  reimburse Mud Logging for the vehicle payment and insurance payments for
  that one-year period.  At the end of the said one-year period, title to
  the vehicle will be transferred to Hoyt L. Hudspeth for $10, and the
  remaining balance of the loan and insurance will become the
  responsibility of Hoyt L. Hudspeth or the Sellers.

       1.8  Accounts Receivable.  Mud Logging shall retain all accounts
  receivable generated prior to Closing, and shall be responsible for
  payment of the Seller's line of credit secured by the accounts receivable
  at First Bethany Bank and Trust, N.A.  Any accounts generated after
  Closing shall belong to Subsidiary.









   <PAGE>

                                                      PAGE 8

                                    ARTICLE II.
                                   THE CLOSING

       2.1  Place and Time.  The closing (the Closing) under this Agreement
  shall take place on June 1, 1999 (the Closing Date) at the offices of
  American Guaranty Title Company located at 4040 North Tulsa, Oklahoma
  City, Oklahoma 73112, (telephone (405) 942-4848; fax (405) 942-6482).
  Regardless of the actual hour of the Closing, the Closing shall be
  effective as of 12:01 a.m. Central Time on the Closing Date (the
  Effective Time).

       2.2  Payment and Delivery by Rentech and Subsidiary.  At the
  Closing, and subject to the terms and conditions set forth herein,
  Rentech and Subsidiary shall:

       (a)  pay the Purchase Price;

       (b)  execute and deliver the certificate required by Section 8.2
       hereof; and

       (c)  execute and deliver the closing documents contemplated under
       this Agreement.

       2.3  Delivery by Sellers.  At the Closing, and subject to the terms
  and conditions set forth herein, Sellers shall:

       (a)  execute and deliver a General Assignment and Conveyance
       conveying all of the Purchased Assets other than the Real Property
       to Subsidiary;

       (b)  execute and deliver a general warranty deed as described in
       Section 1.5.6;

       (c)  execute and deliver such other bills of sale, endorsements,
       assignments, certificates of title, and other instruments of
       transfer and conveyance as are reasonably requested by Rentech and
       Subsidiary;

       (d)  deliver fully executed releases of all filed or recorded liens
       affecting the Purchased Assets, other than the mortgage to M.H.
       Barton described in Section 1.3.1 and security interests securing
       the equipment loan of the First Bethany Bank and Trust, N.A.
       described in Section 1.7.

       (e)  execute and deliver the certificate required by Section 7.1
       hereof.




   <PAGE>

                                                      PAGE 9

  Sellers will from time to time after the Closing Date, at Rentech's
  request, execute such further instruments as Rentech reasonably deems
  necessary to carry out the sale of the Purchased Assets pursuant to this
  Agreement.

       2.4  Possession.  Subsidiary shall be entitled to take possession of
  and Sellers shall deliver to Subsidiary the Purchased Assets as of the
  Closing Date.

       2.5  Prorations.  Taxes assessed against the Real Property and
  Personal Property for the year of sale, water and sewer charges, personal
  property taxes, equipment leases, prepaid expenses and other customary
  items shall be prorated between Sellers and Subsidiary as of the
  Effective Time.


                                   ARTICLE III.
                            REPRESENTATIONS OF SELLERS
                                   WELL LOGGING

       Well Logging represents, promises and warrants, to the best of its
  knowledge, information and belief, to Rentech and Subsidiary as follows:

       3.1  Organization.  Well Logging is a corporation duly organized,
  validly existing, and in good standing under the laws of the state of
  Oklahoma and has all power and authority to own its property and carry on
  its business as now conducted and has all necessary licenses, permits and
  government approvals.

       3.2  Authorization.  The execution, delivery and performance of this
  Agreement and any other documents or instruments contemplated hereby have
  been duly authorized by all necessary action of Well Logging, and this
  Agreement has been executed and delivered by Well Logging and constitutes
  a legal, valid and binding obligation of Well Logging enforceable in
  accordance with its terms.

       3.3  Financial Reports.  True and correct copies of the financial
  statement (including a balance sheet and statement of income) of Well
  Logging for the year ended December 31, 1998, and for each month since
  then to this date (collectively, the Reports) will be provided to Rentech
  by separate delivery.  At  Closing, Well Logging shall deliver to Rentech
  a true and correct copy of the financial statements including a balance
  sheet and statement of income of Well Logging as of the last day of the
  most current month for which available prepared from the books of Well
  Logging without audit since December 31, 1998 (the Interim Reports) the
  Reports and the Interim Reports are collectively referred to as the
  Financial Reports).  All such Financial Reports are in accordance with



   <PAGE>

                                                      PAGE 10

  the books and records of Well Logging, have been prepared consistently
  throughout the periods indicated, reflect all material assets and, to
  Well Logging's knowledge, material liabilities of Well Logging, and
  present fairly and completely, in all material respects, the financial
  condition of Well Logging and its business at such dates and results of
  its operations for the periods then ended, subject only, in the case of
  the Interim Reports, to normal year end adjustments.

       3.4  Absence of Certain Changes.  Except as reflected in Financial
  Reports, since December 31, 1998, Well Logging, its business and the
  Purchased Assets owned by it have not suffered or undergone any change
  that is reasonably likely to have an adverse effect on its business,
  condition (financial or otherwise), or prospects (whether as a result of
  any change as to inventory or other assets, any loss of a competitive
  position, any natural disaster, accident, strike, or any other event or
  condition affecting or relating to its business, Well Logging or the
  Purchased Assets owned by it, whether or not related to any of the
  foregoing), experienced any labor difficulty or suffered any damage,
  destruction or loss (whether or not insured).  Except as reflected in
  Financial Reports since December 31, 1998, Well Logging and its business
  have not:

       (a)  incurred any obligations or liabilities (whether absolute,
       accrued, contingent, or otherwise and whether due or to become due),
       except current liabilities lin the ordinary course of business and
       consistent with past practice;

       (b)  written down or written up the value of any of the Inventory;

       (c)  canceled or waived any claim of right of substantial value or
       sold, assigned, transferred or encumbered any of its properties or
       assets, real, persona, or mixed, tangible or intangible, except for
       fair consideration and in the ordinary course of business and
       consistent with past practice;

       (d)  granted any increase in compensation, rate of compensation or
       commission payable or to become payable, or made any loan, advance
       or other extension of credit to any of its employees or agents
       except merit increases made in the usual and ordinary course of
       business;

       (e)  changed the methods of accounting or accounting principles or
       practices of Well Logging set forth in or reflected in the Financial
       Reports;

       (f)  lost any key employees;

       (g)  terminated or been advised of the termination of its
       relationship with any material customer or supplier;


   <PAGE>

                                                      PAGE 11

       (h)  changed in any material respect the business policies or
       practices of Well Logging or failed to operate the business of Well
       Logging in good faith and in the ordinary course; and

       (i)  agreed, whether in writing or not, to do any of the foregoing.

       3.5  Title to Purchased Assets.  Well Logging has good and
  marketable title to all Purchased Assets, including, without limitation,
  those reflected in the Financial Reports or acquired since the date
  thereof (except for property disposed of since such date in the ordinary
  course of business consistent with past practice), in each case free and
  clear of liens, easements or title imperfections except that, as of the
  date of this Agreement, the Purchased Assets may be subject to liens for
  current taxes not yet due and payable.  As of the Closing Date, the
  Purchased Assets owned by it shall be subject to no liens and Well
  Logging shall have good and marketable title to all Purchased Assets
  owned by it free and clear of liens.

       3.6  Personal Property.  The Purchased Assets owned by Well Logging
  are all of the Personal Property used by Well Logging in the Business.
  The Personal Property is in possession of Well Logging and located at
  Well Logging's principal place of business.  Schedule 1.1(b) includes a
  true and complete list of the Purchased Assets owned by Well Logging.
  Except as set forth on Schedule 1.1(b), all tangible Purchased Assets
  owned by Well Logging are in good operating condition and repair, subject
  to ordinary wear and tear.

       3.7  Suppliers.  After the Closing, Well Logging will identify for
  Subsidiary all suppliers or subcontractors from which Well Logging
  purchased goods or services in excess of $5,000 during the year ended
  December 31, 1998 or expects to purchase goods and services in excess of
  that amount during the current fiscal year.  Well Logging does not
  believe and has not received any threat or notice that any such supplier
  or subcontractor intends to discontinue or to reduce delivery of any such
  goods or services or default under or terminate any agreement with Well
  Logging, or to take any such action with respect to Rentech or Subsidiary
  after the Closing, whether as a result of the transactions contemplated
  hereby or otherwise.

       3.8  Customers.  After the Closing, Well Logging will identify for
  Subsidiary all customers to which Well Logging sold goods or services in
  excess of $5,000 during the year ended December 31, 1998 and all
  customers to which Well Logging expects to sell goods or services in
  excess of that amount during the current year.  Well Logging has no
  reason to believe and has not received any threat or notice that any such
  customer intends to discontinue or to reduce significantly purchases of
  such goods or services or default under or terminate or to reduce



   <PAGE>

                                                      PAGE 12

  significantly purchases of such goods or services or default under or
  terminate any agreement with Well Logging or to take any such actions
  with respect to Rentech or Subsidiary after the Closing, whether as a
  result of the transactions contemplated hereby or otherwise.

       3.9  Purchased Inventory.  The Inventory is in good repair, is not
  obsolete, is usable and saleable in the ordinary course of the business
  as currently conducted, and to Well Logging's knowledge, consists of a
  quantity that is not excessive in kind or amount.  Since December 31,
  1998, no Inventory has been acquired, sold or disposed of except in the
  ordinary course of business consistent with past practice.

       3.10  Compliance With Other Instruments.  Well Logging has complete
  and unrestricted power to undertake and perform all of the obligations
  contained in this Agreement.  Neither the execution and delivery, nor the
  consummation of the transactions provided for in this Agreement, will
  violate the Articles of Incorporation of Well Logging or any material
  agreement, mortgage, indenture, license, franchise, permit, judgment,
  decree, order, law or regulation by which Well Logging is bound.

       3.11  Litigation.  There are no actions, claims, suits,
  investigations, litigation or proceedings pending, or, to the knowledge
  of Well Logging, threatened against or relating to Well Logging or the
  business, including any that would question the validity of this
  Agreement or any other agreements contemplated hereunder or any action
  taken or to be taken pursuant to or in connection with the provisions of
  this Agreement or any other agreement contemplated hereunder, nor is
  there any reasonable basis for any such action, claim, suit, proceeding
  or investigation.  There are no judgments, orders, decrees, citations,
  fines or penalties heretofore assessed (and not discharged or otherwise
  satisfied) against Well Logging under any United States federal, state,
  local or foreign law, and there are no unsatisfied judgments against Well
  Logging.

       3.12  Environmental Matters.  Well Logging is and has at all times
  been in compliance with all applicable United States, federal, state,
  local, and foreign laws and regulations relating to environmental, land
  use, welfare, natural resources, health and safety matters.  There is no
  suit, claim, action or proceeding pending or threatened against Well
  Logging or any reasonable basis therefor, in respect of  (a)
  noncompliance by Well Logging with any such laws or regulations,  (b)
  personal injury, wrongful death or other tortious conduct arising out of
  or resulting from materials, commodities or products held, used, sold,
  transferred, manufactured or disposed of by or on behalf of Well Logging
  or one of its shareholders, containing or incorporating any hazardous or
  toxic materials commodities or substances, or  (c) the presence or
  release or threatened release into the environment of any pollutant,




   <PAGE>

                                                      PAGE 13

  contaminant or toxic or hazardous material, substance or waste, whether
  solid, liquid or gas (each a Hazardous Substance), whether generated by
  Well Logging or located at or about a site currently owned, leased or
  otherwise used by Well Logging or heretofore owned, leased or otherwise
  used by Well Logging or any predecessor entity and for which Well Logging
  would have liability.  There have been no Hazardous Substances generated
  by Well Logging that have been disposed of or come to rest at any site
  that has been included in any published United States federal, state or
  local "superfund" site list or any other list of hazardous or toxic waste
  sites published by any governmental authority in the United States.
  There are and have been no underground storage tanks located on, no
  polychlorinated biphenyls (PCBs) or PCB-containing equipment used or
  stored on, and no hazardous waste, as defined by the Resource
  Conservation and Recovery Act, as amended, 42 U.S.C. Section 6901 et. seq.,
  stored on, any site owned, leased or otherwise used by Well Logging.  No
  such Hazardous Substance is stored by or on behalf of Well Logging at any
  site at which Well Logging provides services.  There has been no release
  or threatened release by Well Logging of Hazardous Substances on, upon,
  into or from (x) any site currently owned, leased or otherwise used by
  Well Logging, (y) any site heretofore owned, leased or otherwise used by
  Well Logging or any predecessor entity or (z) any other site at which
  Well Logging provides services.

       3.13  Tax Returns.  Well Logging has duly filed all tax reports and
  returns required to be filed by it and has duly paid all taxes and other
  charges due as shown thereon or claimed to be due from it by written
  notice from any federal, state, or local taxing authorities, including,
  without limitation, those due in respect of its properties, income,
  franchise, licenses, sales, and payrolls; there are no tax liens upon any
  of the Purchased Assets owned by Well Logging (other than liens for
  current taxes not yet due); there are no agreements, waivers or other
  arrangements providing for an extension of time with respect to the
  assessment of any tax or deficiency against the Purchased Assets owned by
  Well Logging or Well Logging nor are there any actions, suits,
  proceedings, investigations or claims now pending against Well Logging or
  relating to its business; and, there are no pending discussions or
  questions relating to, or claims asserted for taxes or assessments
  against Well Logging.

       3.14  Leases.  As of the Effective Time of Closing, Well Logging
  will not be bound to any leases pursuant to which Well Logging leases
  real or personal property from or to others.

       3.15  Intellectual Property.  Well Logging has no pending
  applications for registration of any rights in Intellectual Property.  No
  licenses, sublicenses or covenants have been granted or entered into by
  Well Logging in respect of any Intellectual Property.  "Intellectual




   <PAGE>

                                                      PAGE 14

  Property" means, collectively:  (a) all registered, unregistered and
  pending  (i) trade names, trade dress, trademarks, service marks, assumed
  names, business names and logos, and all registrations and applications
  therefor,  (ii) all computer software, data files, manuals and other
  specifications and documentation and all know-how related thereto,  (iii)
  technical information, data, process technology, technical papers, plans,
  drawings and blue prints,  (iv) all patents, patent applications, and
  inventions and discoveries that may be patentable, registered designs and
  invention disclosures,  (v) all know-how, trade secrets, proprietary
  inventions, proprietary processes, proprietary formulas, proprietary
  know-how, proprietary concepts, proprietary ideas, proprietary research
  and development, and proprietary designs, and  (vi) all other
  intellectual property, and  (b) all licenses, sublicenses, assignments in
  respect thereto and rights thereunder, remedies against infringements
  thereof and rights to protection of interest therein relating to the
  items set forth in clause (a) above.  Well Logging owns all well logs
  that constitute part of the Purchased Assets, and has the unrestricted
  right to sell information contained in the well logs or abstracted from
  the well logs.

       3.16  Employee Matters.  After the Closing, Well Logging will
  introduce Subsidiary to all employees employed by Well Logging
  (collectively, the Employees), including for each such Employee:  (i) his
  or her position and title;  (ii) his or her date of hire;  (iii) his or
  her salary;  (iv) his or her unpaid wages, accrued vacation time and
  accrued personal time; and  (v) any bonuses paid to him or her with
  respect to the fiscal year ended December 31, 1998 or earned by him or
  her with respect to the current fiscal year.  Well Logging shall as soon
  as reasonably practicable, but in any event within five days after the
  Closing, provide to Rentech the foregoing information with respect to any
  other Employees hired prior to the Closing.  There are no continuing
  contracts of employment with any employees of Well Logging and no bonuses
  due that will be unpaid at Closing.  Well Logging has complied with all
  applicable laws relative to employee benefits, including COBRA and the
  Employee Retirement Income Security Act of 1974, as amended (ERISA), and
  there are no unfunded liabilities relating to any pension or welfare
  benefit plan for which Well Logging could be liable.  Well Logging is not
  a party to any collective bargaining agreement and there is no existing
  dispute or controversy between Well Logging and any of the Employees.
  None of the Employees are represented by a labor union and, to Well
  Logging's knowledge, there is no labor union organizing activity by or
  among such Employees.  Well Logging does not maintain or contribute to,
  nor has it ever maintained or contributed to, any employee benefit plan
  (as defined in ERISA) that is an employee pension benefit plan (as
  defined in ERISA).  Well Logging does not maintain or contribute to, nor
  has it ever maintained or contributed to, an employee benefit plan that
  is an employee welfare benefit plan (as defined in ERISA).




   <PAGE>

                                                      PAGE 15

       3.17  Contracts and Commitments.  There are no continuing contracts,
  agreements, plans, arrangements, or commitments for the benefit of or
  relating to its business that Well Logging holds and that will continue
  past the Closing.

       3.18  Compliance with Law.  Well Logging has not received any notice
  of any violation of and, to the best of Well Logging's knowledge, has
  complied in all material respects with all laws, regulations, and orders
  applicable to its business including all rules and regulations of the
  Occupational Health and Safety Administration, and all federal, state and
  local environmental laws, rules and regulations.

       3.19  Licenses and Permits.  Well Logging holds all licenses and
  permits which, to the best of Well Logging's knowledge, are required for
  Well Logging's operation of its business, all of which are in full force
  and effect.  Well Logging has all governmental and regulatory licenses
  and permits necessary for the conduct of the business as presently
  conducted for the ownership of the Purchased Assets.  All such licenses
  and permits are in full force and effect, and no written notice of any
  violations has been received by Well Logging relating to such licenses or
  permits.  Well Logging is not in violation of any such license or permit,
  and no proceeding or investigation is pending or, to Well Logging's
  knowledge, threatened that would have the effect, directly or indirectly,
  of revoking or limiting in any way such license or permits.  To the
  extent that any such license or permit cannot be obtained independently
  by Subsidiary without condition other than application and the payment of
  applicable fees, such licenses and permits are fully assignable to
  Subsidiary.

       3.20  Disclosure.  No material representation or warranty by Well
  Logging contained in this Agreement and no statement contained in any
  exhibit, schedule certificate, list, or other writing furnished to the
  Buyer pursuant to the provision hereof, to the best knowledge of Well
  Logging, contains any untrue statement of a material fact or omits to
  state a material fact necessary in order to make the statements therein
  not materially misleading.

       3.21  Certain Agreements.  Neither the execution and delivery of
  this Agreement nor the consummation of the transactions contemplated
  hereby will  (i) result in any payment (including, without limitation,
  severance, unemployment compensation, parachute payment, bonus or
  otherwise) becoming due to any Employee or any other person from Well
  Logging under any plan, agreement or otherwise,  (ii) increase any
  benefits otherwise payable to any Employee under any plan or agreement,
  or  (iii) result in the acceleration of the time of payment or vesting of
  any such benefits.




   <PAGE>

                                                      PAGE 16

       3.22  Books and Records.  Well Logging has made available to Rentech
  and Subsidiary true and correct copies of the books and of all corporate
  (including minute books and stock record books) and financial records of
  Well Logging.

       3.23  Standstill.  Neither Well Logging nor any shareholder of Well
  Logging has entered into any arrangement or understanding with any person
  other than Rentech and Subsidiary regarding this sale, exchange or other
  disposition of any of the Purchased Assets owned by it, other than the
  sale of Inventory or used equipment in the ordinary course of business.

       3.24  Year 2000 Representations and Warranties  Well Logging
  represents and warrants that all of Well Logging's products, hardware and
  software, mechanical, electrical or other system that contains a
  microchip or software which is date sensitive (including but not limited
  to:  business, accounting and order fulfillment systems, payroll and
  employee benefit systems, security systems, drilling trucks, logging
  trucks, and equipment controllers), and which are material to Well
  Logging's continued operations (hereinafter the Products and Systems) are
  designed to be used prior to, during, and after the calendar year 2000
  AD, and that the Products and Systems will operate during each such time
  period without error relating to date data, specifically including any
  error relating to, or the product of, data which represents or references
  different centuries or more than one century.  Without limiting the
  generality of the foregoing, Well Logging further represents and warrants
  that the Products and  Systems are and will continue to be "Year 2000
  Compliant," meaning that the data outside the range 1990-1999 will be
  correctly processed in any level of the Products and Systems including,
  but not limited to, microcode, firmware, hardware, application programs,
  files and databases, and all date processing by the Products and Systems
  will recognize and correctly process dates for Leap Years.

                                    MUD LOGGING

       Mud Logging represents, promises and warrants, to the best of its
  knowledge, information and belief, to Rentech and Subsidiary as follows:

       3.25  Organization.  Mud Logging is a corporation duly organized,
  validly existing, and in good standing under the laws of the state of
  Oklahoma and has all power and authority to own its property and carry on
  its business as now conducted and has all necessary licenses, permits and
  government approvals.

       3.26  Authorization.  The execution, delivery and performance of
  this Agreement and any other documents or instruments contemplated hereby
  have been duly authorized by all necessary action of Mud Logging, and
  this Agreement has been executed and delivered by Mud Logging and
  constitutes a legal, valid and binding obligation of Mud Logging
  enforceable in accordance with its terms.


   <PAGE>

                                                      PAGE 17

       3.27  Financial Reports.  True and correct copies of the financial
  statement (including a balance sheet and statement of income) of Mud
  Logging for the year ended December 31, 1998, and for each current month
  since then to this date (collectively, the Reports) will be provided to
  Rentech by separate delivery.  At  Closing, Mud Logging shall deliver to
  Rentech a true and correct copy of the financial statements including a
  balance sheet and statement of income of Mud Logging as of the last day
  of the most current month for which available prepared from the books of
  Mud Logging without audit since December 31, 1998 (the Interim Reports)
  (the Reports and the Interim Reports are collectively referred to as the
  Financial Reports).  All such Financial Reports are in accordance with
  the books and records of Mud Logging, have been prepared consistently
  throughout the periods indicated, reflect all material assets and, to Mud
  Logging's knowledge, material liabilities of Mud Logging, and present
  fairly and completely, in all material respects, the financial condition
  of Mud Logging and its business at such dates and results of its
  operations for the periods then ended, subject only, in the case of the
  Interim Reports, to normal year end adjustments.

       3.28  Absence of Certain Changes.  Except as reflected in Financial
  Reports, since December 31, 1998, Mud Logging, its business and the
  Purchased Assets owned by it have not suffered or undergone any change
  that is reasonably likely to have an adverse effect on its business,
  condition (financial or otherwise), or prospects (whether as a result of
  any change as to inventory or other assets, any loss of a competitive
  position, any natural disaster, accident, strike, or any other event or
  condition affecting or relating to its business, Mud Logging or the
  Purchased Assets owned by it, whether or not related to any of the
  foregoing), experienced any labor difficulty or suffered any damage,
  destruction or loss (whether or not insured).  Except as reflected in
  Financial Reports since December 31, 1998, Well Logging and its business
  have not:

       (a)  incurred any obligations or liabilities (whether absolute,
       accrued, contingent, or otherwise and whether due or to become due),
       except current liabilities lin the ordinary course of business and
       consistent with past practice;

       (b)  written down or written up the value of any of the Inventory;

       (c)  canceled or waived any claim of right of substantial value or
       sold, assigned, transferred or encumbered any of its properties or
       assets, real, persona, or mixed, tangible or intangible, except for
       fair consideration and in the ordinary course of business and
       consistent with past practice;





   <PAGE>

                                                      PAGE 18

       (d)  granted any increase in compensation, rate of compensation or
       commission payable or to become payable, or made any loan, advance
       or other extension of credit to any of its employees or agents
       except merit increases made in the usual and ordinary course of
       business;

       (e)  changed the methods of accounting or accounting principles or
       practices of Mud Logging set forth in or reflected in the Financial
       Reports;

       (f)  lost any key employees;

       (g)  terminated or been advised of the termination of its
       relationship with any material customer or supplier;

       (h)  changed in any material respect the business policies or
       practices of Mud Logging or failed to operate the business of Mud
       Logging in good faith and in the ordinary course; and

       (i)  agreed, whether in writing or not, to do any of the foregoing.

       3.29  Title to Purchased Assets.  Mud Logging has good and
  marketable title to all Purchased Assets, including, without limitation,
  those reflected in the Financial Reports or acquired since the date
  thereof (except for property disposed of since such date in the ordinary
  course of business consistent with past practice), in each case free and
  clear of liens, easements or title imperfections except that, as of the
  date of this Agreement, the Purchased Assets may be subject to liens for
  current taxes not yet due and payable.  As of the Closing Date, the
  Purchased Assets owned by it shall be subject to no liens and Mud Logging
  shall have good and marketable title to all Purchased Assets owned by it
  free and clear of liens.

       3.30  Personal Property.  The Purchased Assets owned by Mud Logging
  are all of the Personal Property used by Mud Logging in the Business.
  The Personal Property is in possession of Mud  Logging and located at Mud
  Logging's principal place of business.  Schedule 1.1(b) includes a true
  and complete list of the Purchased Assets owned by Mud Logging.  Except
  as set forth on Schedule 1.1(b), all tangible Purchased Assets owned by
  Mud Logging are in good operating condition and repair, subject to
  ordinary wear and tear.

       3.31  Suppliers.  After the Closing, Mud Logging will identify for
  Subsidiary all suppliers or subcontractors from which Mud Logging
  purchased goods or services in excess of $5,000 during the year ended
  December 31, 1998 or expects to purchase goods and services in excess of
  that amount during the current fiscal year.  Mud Logging does not believe




   <PAGE>

                                                      PAGE 19

  and has not received any threat or notice that any such supplier or
  subcontractor intends to discontinue or to reduce delivery of any such
  goods or services or default under or terminate any agreement with Mud
  Logging, or to take any such action with respect to Rentech or Subsidiary
  after the Closing, whether as a result of the transactions contemplated
  hereby or otherwise.

       3.32  Customers.  After the Closing, Mud Logging will identify for
  Subsidiary all customers to which Mud Logging sold goods or services in
  excess of $5,000 during the year ended December 31, 1998 and all
  customers to which Mud Logging expects to sell goods or services in
  excess of that amount during the current year.  Mud Logging has no reason
  to believe and has not received any threat or notice that any such
  customer intends to discontinue or to reduce significantly purchases of
  such goods or services or default under or terminate or to reduce
  significantly purchases of such goods or services or default under or
  terminate any agreement with Mud Logging or to take any such actions with
  respect to Rentech or Subsidiary after the Closing, whether as a result
  of the transactions contemplated hereby or otherwise.

       3.33  Purchased Inventory.  The Inventory is in good repair, is not
  obsolete, is usable and saleable in the ordinary course of the business
  as currently conducted, and to Mud Logging's knowledge, consists of a
  quantity that is not excessive in kind or amount.  Since December 31,
  1998, no Inventory has been acquired, sold or disposed of except in the
  ordinary course of business consistent with past practice.

       3.34  Compliance With Other Instruments.  Mud Logging has complete
  and unrestricted power to undertake and perform all of the obligations
  contained in this Agreement.  Neither the execution and delivery, nor the
  consummation of the transactions provided for in this Agreement, will
  violate the Articles of Incorporation of Mud Logging or any material
  agreement, mortgage, indenture, license, franchise, permit, judgment,
  decree, order, law or regulation by which Mud Logging is bound.

       3.35  Litigation.  There are no actions, claims, suits,
  investigations, litigation or proceedings pending, or, to the knowledge
  of Mud Logging, threatened against or relating to Mud Logging or the
  business, including any that would question the validity of this
  Agreement or any other agreements contemplated hereunder or any action
  taken or to be taken pursuant to or in connection with the provisions of
  this Agreement or any other agreement contemplated hereunder, nor is
  there any reasonable basis for any such action, claim, suit, proceeding
  or investigation.  There are no judgments, orders, decrees, citations,
  fines or penalties heretofore assessed (and not discharged or otherwise
  satisfied) against Mud Logging under any United States federal, state,
  local or foreign law, and there are no unsatisfied judgments against Mud
  Logging.


   <PAGE>

                                                      PAGE 20

       3.36  Environmental Matters.  Mud Logging is and has at all times
  been in compliance with all applicable United States, federal, state,
  local, and foreign laws and regulations relating to environmental, land
  use, welfare, natural resources, health and safety matters.  There is no
  suit, claim, action or proceeding pending or threatened against Mud
  Logging or any reasonable basis therefor, in respect of  (a)
  noncompliance by Mud Logging with any such laws or regulations,  (b)
  personal injury, wrongful death or other tortious conduct arising out of
  or resulting from materials, commodities or products held, used, sold,
  transferred, manufactured or disposed of by or on behalf of Mud Logging
  or one of its shareholders, containing or incorporating any hazardous or
  toxic materials commodities or substances, or  (c) the presence or
  release or threatened release into the environment of any pollutant,
  contaminant or toxic or hazardous material, substance or waste, whether
  solid, liquid or gas (each a Hazardous Substance), whether generated by
  Mud Logging or located at or about a site currently owned, leased or
  otherwise used by Mud Logging or heretofore owned, leased or otherwise
  used by Well Logging or any predecessor entity and for which Mud Logging
  would have liability.  There have been no Hazardous Substances generated
  by Mud Logging that have been disposed of or come to rest at any site
  that has been included in any published United States federal, state or
  local "superfund" site list or any other list of hazardous or toxic waste
  sites published by any governmental authority in the United States.
  There are and have been no underground storage tanks located on, no
  polychlorinated biphenyls (PCBs) or PCB-containing equipment used or
  stored on, and no hazardous waste, as defined by the Resource
  Conservation and Recovery Act, as amended, 42 U.S.C. Section 6901 et. seq.,
  stored on, any site owned, leased or otherwise used by Mud Logging.  No
  such Hazardous Substance is stored by or on behalf of Mud Logging at any
  site at which Mud Logging provides services.  There has been no release
  or threatened release by Mud Logging of Hazardous Substances on, upon,
  into or from (x) any site currently owned, leased or otherwise used by
  Mud Logging, (y) any site heretofore owned, leased or otherwise used by
  Mud Logging or any predecessor entity or (z) any other site at which Mud
  Logging provides services.

       3.37  Tax Returns.  Mud Logging has duly filed all tax reports and
  returns required to be filed by it and has duly paid all taxes and other
  charges due as shown thereon or claimed to be due from it by written
  notice from any federal, state, or local taxing authorities, including,
  without limitation, those due in respect of its properties, income,
  franchise, licenses, sales, and payrolls; there are no tax liens upon any
  of the Purchased Assets owned by Mud Logging (other than liens for
  current taxes not yet due); there are no agreements, waivers or other
  arrangements providing for an extension of time with respect to the
  assessment of any tax or deficiency against the Purchased Assets owned by




   <PAGE>

                                                      PAGE 21

  Mud Logging or Mud Logging nor are there any actions, suits, proceedings,
  investigations or claims now pending against Mud Logging or relating to
  its business; and, there are no pending discussions or questions relating
  to, or claims asserted for taxes or assessments against Mud Logging.

       3.38  Leases.  At the Effective Time of Closing, Mud Logging will
  not be bound to any leases pursuant to which Mud Logging leases real or
  personal property from or to others.

       3.39  Intellectual Property.  Mud Logging has no pending
  applications for registration of any rights in Intellectual Property.  No
  licenses, sublicenses or covenants have been granted or entered into by
  Mud Logging in respect of any Intellectual Property.  "Intellectual
  Property" means, collectively:  (a) all registered, unregistered and
  pending  (i) trade names, trade dress, trademarks, service marks, assumed
  names, business names and logos, and all registrations and applications
  therefor,  (ii) all computer software, data files, manuals and other
  specifications and documentation and all know-how related thereto,  (iii)
  technical information, data, process technology, technical papers, plans,
  drawings and blue prints,  (iv) all patents, patent applications, and
  inventions and discoveries that may be patentable, registered designs and
  invention disclosures,  (v) all know-how, trade secrets, proprietary
  inventions, proprietary processes, proprietary formulas, proprietary
  know-how, proprietary concepts, proprietary ideas, proprietary research
  and development, and proprietary designs, and  (vi) all other
  intellectual property, and  (b) all licenses, sublicenses, assignments in
  respect thereto and rights thereunder, remedies against infringements
  thereof and rights to protection of interest therein relating to the
  items set forth in clause (a) above.

       3.40  Employee Matters.  After the Closing, Mud Logging will
  introduce Subsidiary to all employees employed by Mud Logging
  (collectively, the Employees), including for each such Employee:  (i) his
  or her position and title;  (ii) his or her date of hire;  (iii) his or
  her salary;  (iv) his or her unpaid wages, accrued vacation time and
  accrued personal time; and  (v) any bonuses paid to him or her with
  respect to the fiscal year ended December 31, 1998 or earned by him or
  her with respect to the current fiscal year.  Mud Logging shall as soon
  as reasonably practicable, but in any event within five days after the
  Closing, provide to Rentech the foregoing information with respect to any
  other Employees hired prior to the Closing.  There are no continuing
  contracts of employment with any employees of Mud Logging and no bonuses
  due that will be unpaid at Closing.  Mud Logging has complied with all
  applicable laws relative to employee benefits, including COBRA and the
  Employee Retirement Income Security Act of 1974, as amended (ERISA), and
  there are no unfunded liabilities relating to any pension or welfare
  benefit plan for which Mud Logging could be liable.  Mud Logging is not a



   <PAGE>

                                                      PAGE 22

  party to any collective bargaining agreement and there is no existing
  dispute or controversy between Mud Logging and any of the Employees.
  None of the Employees are represented by a labor union and, to Mud
  Logging's knowledge, there is no labor union organizing activity by or
  among such Employees.  Mud Logging does not maintain or contribute to,
  nor has it ever maintained or contributed to, any employee benefit plan
  (as defined in ERISA) that is an employee pension benefit plan (as
  defined in ERISA).  Mud Logging does not maintain or contribute to, nor
  has it ever maintained or contributed to, an employee benefit plan that
  is an employee welfare benefit plan (as defined in ERISA).

       3.41  Contracts and Commitments.  There are no continuing contracts,
  agreements, plans, arrangements, or commitments for the benefit of or
  relating to its business that Mud Logging holds and that will continue
  past the Closing.

       3.42  Compliance with Law.  Mud Logging has not received any notice
  of any violation of and, to the best of Mud Logging's knowledge, has
  complied in all material respects with all laws, regulations, and orders
  applicable to its business including all rules and regulations of the
  Occupational Health and Safety Administration, and all federal, state and
  local environmental laws, rules and regulations.

       3.43  Licenses and Permits.  Mud Logging holds all licenses and
  permits which, to the best of Well Logging's knowledge, are required for
  Mud Logging's operation of its business, all of which are in full force
  and effect.  Mud Logging has all governmental and regulatory licenses and
  permits necessary for the conduct of the business as presently conducted
  for the ownership of the Purchased Assets.  All such licenses and permits
  are in full force and effect, and no written notice of any violations has
  been received by Mud Logging relating to such licenses or permits.  Mud
  Logging is not in violation of any such license or permit, and no
  proceeding or investigation is pending or, to Mud Logging's knowledge,
  threatened that would have the effect, directly or indirectly, of
  revoking or limiting in any way such license or permits.  To the extent
  that any such license or permit cannot be obtained independently by
  Subsidiary without condition other than application and the payment of
  applicable fees, such licenses and permits are fully assignable to
  Subsidiary.

       3.44  Disclosure.  No material representation or warranty by Mud
  Logging contained in this Agreement and no statement contained in any
  exhibit, schedule certificate, list, or other writing furnished to the
  Buyer pursuant to the provision hereof, to the best knowledge of Mud
  Logging, contains any untrue statement of a material fact or omits to
  state a material fact necessary in order to make the statements therein
  not materially misleading.




   <PAGE>

                                                      PAGE 23

       3.45  Certain Agreements.  Neither the execution and delivery of
  this Agreement nor the consummation of the transactions contemplated
  hereby will  (i) result in any payment (including, without limitation,
  severance, unemployment compensation, parachute payment, bonus or
  otherwise) becoming due to any Employee or any other person from Mud
  Logging under any plan, agreement or otherwise, (ii) increase any
  benefits otherwise payable to any Employee under any plan or agreement,
  or  (iii) result in the acceleration of the time of payment or vesting of
  any such benefits.

       3.46  Books and Records.  Mud Logging has made available to Rentech
  and Subsidiary true and correct copies of the books and of all corporate
  (including minute books and stock record books) and financial records of
  Mud Logging.

       3.47  Standstill.  Neither Mud Logging nor any shareholder of Mud
  Logging has entered into any arrangement or understanding with any person
  other than Rentech and Subsidiary regarding this sale, exchange or other
  disposition of any of the Purchased Assets owned by it, other than the
  sale of Inventory or used equipment in the ordinary course of business.

       3.48  Year 2000 Representations and Warranties  Mud Logging
  represents and warrants that all of Well Logging's products, hardware and
  software, mechanical, electrical or other system that contains a
  microchip or software which is date sensitive (including but not limited
  to:  business, accounting and order fulfillment systems, payroll and
  employee benefit systems, security systems, drilling trucks, logging
  trucks, and equipment controllers), and which are material to Mud
  Logging's continued operations (hereinafter the Products and Systems) are
  designed to be used prior to, during, and after the calendar year 2000
  AD, and that the Products and Systems will operate during each such time
  period without error relating to date data, specifically including any
  error relating to, or the product of, date data which represents or
  references different centuries or more than one century.  Without
  limiting the generality of the foregoing, Mud Logging further represents
  and warrants that the Products and  Systems are and will continue to be
  "Year 2000 Compliant," meaning that the data outside the range 1990-1999
  will be correctly processed in any level of the Products and Systems
  including, but not limited to, microcode, firmware, hardware, application
  programs, files and databases, and all date processing by the Products
  and Systems will recognize and correctly process dates

                                    ARTICLE IV.
                       CONDUCT OF BUSINESS PRIOR TO CLOSING

       Sellers each separately covenant and agree that prior to the
  Closing, except as Rentech may consent in writing:




   <PAGE>

                                                      PAGE 24

       4.1  Operation in Ordinary Course.  Its business will be conducted
  only in the ordinary course.

       4.2  Operation of the Business.  It shall use its best efforts to
  keep its business intact and to preserve the goodwill of suppliers,
  customers and others having business relations with it.

       4.3  Employees.  It will pay all salaries, wages, payroll taxes,
  benefits, vacation pay, all other fringe benefit costs, and all other
  costs of every nature whatsoever due or accrued at or prior to the
  Closing to or for the benefit of its employees or agents, Rentech and
  Subsidiary assuming no responsibility for any of the above.  Effective as
  of the Effective Time, of the Closing, it shall terminate the employment
  of all of its employees.

       4.4  Payment of Liabilities.  It will pay as the same become due all
  of its expenses, trade payables and all liabilities other than the
  Assumed Liabilities.

       4.5  Payment of Taxes.  It will promptly file all tax returns and
  pay all federal, state and local tax assessments and governmental charges
  which are or may be lawfully levied or assessed against it, its business
  or the Purchased Assets owned by it for periods ending on or prior to the
  Closing Date, including, but not limited to, ad valorem, sales, use,
  excise, franchise, and personal property taxes.

       4.6  Insurance.  It will maintain in effect through the Closing Date
  all existing insurance coverage covering the Purchased Assets owned by
  it.

       4.7  Maintenance of Properties; Risk of Loss.  Through the Closing
  Date, it will maintain all the Purchased Assets owned by it in customary
  repair, order and condition, reasonable wear and use and damage by fire
  or other casualty excepted.  It shall be responsible for all risk of loss
  prior to the Closing Date.

       4.8  Maintenance of Books.  Through the Closing Date, it will
  maintain its books, accounts and records in the usual manner on a basis
  consistent with prior periods.  It will duly comply in all material
  respects with all laws and decrees applicable to it.

       4.9  Update Schedules.  It will advise Rentech of any changes in the
  information provided in the schedules attached hereto.

       4.10  Exclusivity; Acquisition Proposals.  Unless and until this
  Agreement shall have been terminated by either party pursuant to Article
  9, except as required by law, neither Well Logging, Mud Logging nor Hoyt



   <PAGE>

                                                      PAGE 25

  L. Hudspeth will and they shall so instruct their officers, directors,
  agents, representatives or affiliates, not to, take or cause, directly or
  indirectly, any of the following actions with any person other than Buyer
  and its designees or agents:  (i) solicit, encourage, initiate or
  participate in any negotiations, inquiries or discussions with respect to
  any offer or proposal to acquire all or any substantial part of the
  Purchased Assets owned by Well Logging or Mud Logging, respectively,
  (Acquisition Transaction);  (ii) disclose any information not customarily
  disclosed to any person concerning its business or the Purchased Assets
  except in the ordinary course of business consistent with past practice
  and as required pursuant to a governmental request for information;
  (iii) enter into or execute any agreement relating to an Acquisition
  Transaction, or other agreement calling for the sale, directly or
  indirectly, of all or any significant part of its business or the
  Purchased Assets; or  (iv) make or authorize any public statement,
  recommendation or solicitation with respect to any Acquisition
  Transaction or any offer or proposal relating to an Acquisition
  Transaction other than with respect to the transactions contemplated
  hereby.


                                    ARTICLE V.
                    PRE-CLOSING COVENANTS OF SELLERS AND BUYER

       5.1  Environmental Survey.  If Rentech elects to obtain an
  environmental survey of the Real Property, Sellers and Rentech shall
  cooperate in obtaining, at Rentech's expense, a Phase I environmental
  survey of the Real Property.  The Phase I survey shall be ordered from an
  environmental consultant by Rentech, at its expense, no later than ten
  (10) days after the date hereof and shall be completed as promptly as
  possible.  If a Phase II environmental survey is required by the
  environmental consultant preparing the Phase I survey, Sellers shall be
  responsible for the cost of the Phase II survey.

       5.2  Cooperation.  Mud Logging, Well Logging, Rentech and Subsidiary
  shall use their best efforts to cause the sale contemplated by this
  Agreement to be consummated, and, without limiting the generality of the
  foregoing, to make all filings with and give notices to third parties
  which may be necessary or reasonably required in order to effect the
  transactions contemplated hereby.

       5.3  Access to Premises.  Between the date hereof and the Closing
  Date, the Sellers will afford to the officers and authorized
  representatives of Rentech and Subsidiary access during normal business
  hours (with the participation of Hoyt L. Hudspeth) to the premises,
  properties, and to the books and records of Sellers in order that Rentech
  and Subsidiary shall have the opportunity to make such investigations as



   <PAGE>

                                                      PAGE 26

  it shall desire and to permit Sellers to review such financial and
  operating data and other information regarding the Businesses as Rentech
  shall from time to time reasonably request.  Rentech shall not contact or
  meet with Sellers' customers or suppliers without the participation of
  Hoyt L. Hudspeth.  Neither party shall make public disclosure of this
  Agreement prior to the Closing except as required in connection with
  transfer of permits, licenses and other such transactions.

       5.4  Confidentiality.

            (a)  Rentech and Subsidiary agree to keep confidential the
       information that Sellers provides to Rentech and Subsidiary and not
       to use such information for any purpose whatsoever other than
       evaluating the transactions contemplated in this Agreement.  Rentech
       and Subsidiary further agree that they will not make any oral or
       written disclosures concerning the information provided to it to any
       person without the prior approval of Sellers; provided, however,
       that Rentech and Subsidiary may disclose such confidential
       information to persons subject to Rentech's and Subsidiary's control
       who have a need to know such confidential information in connection
       with the negotiations between Rentech and Subsidiary and Sellers, to
       Rentech's and Subsidiary's affiliates, to existing or prospective
       lenders of or investors in Rentech and Subsidiary, all of whom will
       be directed and required to maintain such information in the
       strictest confidence at all times.

            (b)  Sellers agree to keep in strictest confidence and to
       refrain from disclosing to any person, except to their legal
       counsel, any aspect of the transactions contemplated in this
       Agreement, including (without limitation) the identify of Rentech
       and Subsidiary, the existence of this Agreement, the terms and
       conditions set forth in this Agreement, the contents of any
       discussions and negotiations that already have taken place and that
       may take place in the future, and the fact that Sellers or Rentech
       and Subsidiary are contemplating a transaction of the type set
       forth in this Agreement, as well as any other matter relating to
       this Agreement or relating to the transactions contemplated thereby.

       5.5  Due Diligence Investigation.  Sellers agree that Rentech's or
  Subsidiary's representatives shall have full access to and the right to
  inspect and evaluate the Businesses, including the Properties and books
  and records, and shall have the opportunity to interview Sellers'
  respective accountants and Sellers' respective key employees concerning
  the Businesses.  Rentech will be provided a copy of an appraisal of the
  Real Property.  Rentech will make its own due diligence investigation and
  financial analysis of all matters pertaining to the value of the
  Businesses and the advisability of making the purchase.  Rentech will
  have the opportunity to conduct such investigations of the Businesses as
  it wishes, including environmental assessments of the Real Property.


   <PAGE>

                                                      PAGE 27

                                    ARTICLE VI.
                             REPRESENTATIONS BY BUYER

                                     RENTECH

       Rentech represents, promises and warrants to the Sellers as follows:

       6.1  Organization.  Rentech is a corporation duly organized, validly
  existing, and in good standing under the laws of the state of Colorado,
  and has all corporate power and authority to own its property and carry
  on its business as now conducted.

       6.2  Authorization.  The execution, delivery and performance of this
  Agreement and any other documents or instruments contemplated hereby has
  been duly authorized by all necessary corporate actions of Rentech, and
  this Agreement has been executed and will be delivered by Rentech and
  will constitute a legal, valid and binding obligation of the Rentech
  enforceable in accordance with their terms.

       6.3  Compliance With Other Instruments.  Rentech has complete and
  unrestricted power to undertake and perform all of the obligations
  contained in this Agreement.  Neither the execution and delivery, nor the
  consummation of the transactions provided for in  this Agreement, will
  violate the Articles of Incorporation or the bylaws of Rentech or any
  material agreement, mortgage, indenture, license, franchise, permit,
  lease or other instrument, judgment, decree, order, law or regulation by
  which Rentech is bound.

       6.4  Litigation.  There is no action, suit, litigation or proceeding
  pending, or, to the best knowledge of Rentech, threatened against or
  relating to Rentech which could adversely affect the ability of Rentech
  to perform the transactions contemplated by this Agreement.


                                    SUBSIDIARY

       Subsidiary represents, promises and warrants to the Sellers as
  follows:

       6.5  Organization.  Subsidiary is a corporation duly organized,
  validly existing, and in good standing under the laws of the state of
  Colorado, and has all corporate power and authority to own its property
  and carry on its business as now conducted.

       6.6  Authorization.  The execution, delivery and performance of this
  Agreement and any other documents or instruments contemplated hereby has





   <PAGE>

                                                      PAGE 28

  been duly authorized by all necessary corporate actions of Subsidiary,
  and this Agreement has been executed and will be delivered by Subsidiary
  and will constitute a legal, valid and binding obligation of the
  Subsidiary enforceable in accordance with their terms.

       6.7  Compliance With Other Instruments.  Subsidiary has complete and
  unrestricted power to undertake and perform all of the obligations
  contained in this Agreement.  Neither the execution and delivery, nor the
  consummation of the transactions provided for in this Agreement, will
  violate the Articles of Incorporation or the bylaws of Subsidiary or any
  material agreement, mortgage, indenture, license, franchise, permit,
  lease or other instrument, judgment, decree, order, law or regulation by
  which Subsidiary is bound.

       6.8  Litigation.  There is no action, suit, litigation or proceeding
  pending, or, to the best knowledge of Subsidiary, threatened against or
  relating to Subsidiary which could adversely affect the ability of
  Subsidiary to perform the transactions contemplated by this Agreement.


                                   ARTICLE VII.
                    CONDITIONS PRECEDENT TO BUYER'S OBLIGATIONS

       The obligation of Rentech and Subsidiary to consummate the
  transactions contemplated in this Agreement is subject to the fulfillment
  to its satisfaction or the following conditions prior to or at the
  Closing (unless expressly waived in writing by Rentech and Subsidiary).

       7.1  Representations, Warranties and Covenants.  The representations
  and warranties made by Sellers shall be true and correct in all material
  respects at and as of the Closing Date; and Sellers shall have performed
  and complied in all material respects with all covenants, agreements and
  conditions contained in this Agreement required to be performed or
  complied with by them prior to the Closing and Sellers shall provide to
  Rentech and Subsidiary at the Closing a certificate to such effect
  executed by Sellers.

       7.2  Litigation.  There shall be no litigation pending or threatened
  against Sellers with respect to the consummation of this Agreement or
  which could adversely affect the ability of Sellers to convey the
  Purchased Assets to Subsidiary.

       7.3  Transfer of Purchased Assets.  Sellers shall have executed and
  delivered to Subsidiary one or more bills of sale, assignments or other
  instruments transferring the Purchased Assets to Subsidiary, including,
  without limitation, any specific forms of assignment or instrument
  required by applicable law for a particular asset or type of asset, all
  of which shall be in both form and substance reasonably satisfactory to
  Rentech and Subsidiary.


   <PAGE>

                                                      PAGE 29

       7.4  Release of Liens, Guarantees, Etc.  All liens and other
  encumbrances on the Purchased Assets shall have been released, unless
  specifically agreed herein to be assumed by Buyer.

       7.5  No Adverse Effect, etc.  No material adverse effect shall have
  occurred between the date of this Agreement and the Closing Date nor
  shall have occurred any other fact or circumstance that could be expected
  to have a material adverse effect and Sellers shall certify to that
  effect.  Rentech shall not have become aware of any fact or circumstance
  materially adversely affecting or that could be expected to materially
  adversely affect Rentech's and Subsidiary's right to conduct the
  Businesses substantially as they were being conducted on March 31, 1999
  or to own the Purchased Assets.

       7.6  Buyer's Due Diligence.  Rentech shall have completed its due
  diligence with respect to Sellers, the Businesses and the Purchased
  Assets and the results of such due diligence shall be satisfactory to
  Rentech.

       7.7  Noncompetition Agreement.  Sellers and Hoyt L. Hudspeth, Ronald
  Ray Hudspeth, and Tammy Silva shall have entered into the employment
  agreements with Subsidiary, in the form of those attached as Exhibit 1.4,
  with the noncompetition agreements contained in each of them,
  respectively.

       7.8  Title Documents.  The Title Documents, the title commitment and
  the Deed shall have been delivered and shall be deemed to be satisfactory
  to Rentech and Subsidiary pursuant to provisions of Section 1.5.

       7.9  Delivery of Possession, Etc.  Sellers shall have delivered to
  Subsidiary possession and control of the Purchased Assets in a manner
  reasonably satisfactory to Rentech and Subsidiary.

       7.10  Charter Documents, Etc.  Sellers shall have delivered  (i) a
  copy of their respective articles of incorporation certified by the
  Secretary of State of the state of Oklahoma and a good standing
  certificate for each Sellers issued by the Secretary of State of the
  state of Oklahoma and  (ii) certificates of the Secretary of State
  certifying that attached thereto is a copy of each Sellers' respective
  bylaws as in effect on the date thereof, copies of directors' and
  shareholders' resolutions authorizing the transactions contemplated by
  this Agreement and certifying the incumbency of the officers authorized
  to execute this Agreement and the documents and instruments delivered by
  each Seller in connection therewith.  Mud Logging shall have executed an
  amendment to its Certificate of Incorporation changing its name from
  Petroleum Mud Logging, Inc. to such other name that will not conflict




   <PAGE>

                                                      PAGE 30

  with Subsidiary's qualification as a foreign corporation in Oklahoma
  under the name Petroleum Mud Logging, Inc., a Colorado corporation.  The
  amendment to the Certificate of Incorporation shall be filed prior to or
  immediately after Closing.

       7.11  General.  All instruments and legal and corporate proceedings
  in connection with the transactions contemplated by this Agreement shall
  be reasonably satisfactory in form and substance to Rentech, and Rentech
  shall have received counterpart originals, or certified or other copies,
  of all documents that it may reasonably request in connection therewith.


                                   ARTICLE VIII.
                   CONDITIONS PRECEDENT TO SELLERS' OBLIGATIONS

       The obligation of Sellers to consummate the transactions
  contemplated by this Agreement is subject to the fulfillment to its
  satisfaction of the following conditions prior to at the Closing (unless
  expressly waived in writing by Sellers):

       8.1  Execution of Employment Contracts.  Rentech and Subsidiary
  shall have provided employment contracts with agreed upon terms to Hoyt
  L. Hudspeth, Ronald Ray Hudspeth, Tammy Silva and the key staff members,
  and these individuals and the key staff members shall have executed such
  employment contracts.

       8.2  Representations Warranties and Covenants.  The representations
  and warranties made by Rentech and Subsidiary shall be true and correct
  in all material respects at and as of the Closing Date and Rentech and
  Subsidiary shall have performed and complied in all material respects
  with all covenants, agreements and conditions contained in this Agreement
  required to be performed or complied with by it prior to the Closing and
  Rentech and Subsidiary shall provide to Sellers at the Closing a
  certificate to such effect executed by an officer of Rentech and
  Subsidiary, respectively.

       8.3  Litigation.  There shall be no litigation pending or threatened
  against Rentech or Subsidiary with respect to the consummation of this
  Agreement.

       8.4  Consideration.  Rentech and Subsidiary shall have paid to
  Sellers the Purchase Price as provided in Section 1.2.

       8.5  Charter Documents, etc.  Rentech and Subsidiary shall have
  delivered:  (i) a copy of a good standing certificate for Rentech and
  Subsidiary issued by the Secretary of State of the state of Colorado and
  (ii) copies of directors' and shareholders' resolutions of Rentech and




   <PAGE>

                                                      PAGE 31

  Subsidiary, respectively, authorizing the transactions contemplated by
  this Agreement and certifying the incumbency of the officers authorized
  to execute this Agreement and the documents and instruments delivered by
  Rentech and Subsidiary in connection therewith.

       8.6  General.  All instruments and legal and corporate proceedings
  in connection with the transactions contemplated by this Agreement shall
  be reasonably satisfactory in form and substance to Rentech, and Rentech
  shall have received counterpart originals, or certified or other copies,
  of all documents that it may reasonably request in connection therewith.


                                   ARTICLE IX.
                          FAILURE OF CONDITIONS: REMEDIES

       9.1  Failure of Conditions Precedent - No Breach.  In the event any
  condition precedent to the obligations of any party are not satisfied on
  the Closing Date and the failure to satisfy the condition precedent is
  not due to a breach of this Agreement by the other party, the party whose
  conditions precedent have not been satisfied shall have the option of
  terminating this Agreement or waiving the unsatisfied condition precedent
  and closing hereunder (and, in either event, waiving any claim for
  damages or indemnity relating thereto).

       9.2  Failure of Conditions Precedent - Breach.  In the event any
  condition precedent to the obligations of any party are not satisfied on
  the Closing Date and the failure to satisfy the condition precedent is
  due to a breach of this Agreement by the other party, or in the event of
  any other breach of this Agreement, the party who is not in breach of
  this Agreement shall have the following rights:

       (a)  If either Mud Logging or Well Logging are in breach, Rentech
       and Subsidiary shall have the option of terminating this Agreement
       without, in either event, waiving its claim for damages resulting
       from the breach;

       (b)  If Rentech or Subsidiary are in breach, Mud Logging and Well
       Logging shall have the option of terminating this Agreement without,
       in either event, waiving their claim for damages resulting from the
       breach.


                                    ARTICLE X.
                                  INDEMNIFICATION

       10.1  Survival of Representations Warranties and Covenants.  All of
  Rentech's and Subsidiary's representations, covenants and warranties




   <PAGE>

                                                      PAGE 32

  contained herein and in any documents delivered pursuant to this
  Agreement (except those waived pursuant to Section 9.1) shall survive the
  Closing hereunder; provided that the representation and warranties shall
  only remain in full force and effect for a period of two (2) years
  following the Closing Date.

       10.2  Indemnity by Sellers.  Sellers shall indemnify, save, and hold
  harmless Rentech and Subsidiary from any "damages" as hereinafter
  defined.  "Damages," as used herein, shall mean and include any loss,
  cost, expense, or other liability, including counsel fees, which Rentech
  or Subsidiary may incur or suffer:  (a) by reason of the inaccuracy of
  any of Sellers' representations contained in this Agreement or breach or
  default in performance by the Sellers of the covenants which it is to
  perform hereunder after the Closing Date; or (b) except for any assumed
  liabilities, liabilities not assumed by Rentech or Subsidiary arising out
  of or relating to Sellers' ownership and operation of the Businesses and
  the Purchased Assets prior to the Closing Date, including Sellers'
  failure to comply with federal and state environmental laws.

       10.3  Indemnity by Buyer.  Rentech and Subsidiary shall indemnify,
  save, and hold harmless Sellers from any "damages" as hereinafter
  defined.  "Damages," as used herein, shall mean and include any loss,
  cost, expense, or other liability, including counsel fees, which Sellers
  may incur or suffer:  (a) by reason of the inaccuracy of any
  representation of Rentech or Subsidiary contained in this Agreement, or
  breach or default in performance by Rentech or Subsidiary, of the
  covenants which it is to perform hereunder after the Closing Date; or as
  a result of (b) Rentech's or Subsidiary's ownership and operation of the
  Businesses and the Purchased Assets from and after the Closing Date,
  including any assumed liabilities and Damages resulting from Rentech's or
  Subsidiary's failure to comply with federal and state environmental laws
  from and after the Closing Date.

       10.4  Procedures for Indemnification.  The party entitled to
  indemnification (Indemnitee) shall, as promptly as is reasonably
  practicable after it becomes aware thereof, notify the other party
  (Indemnitor) of the existence of any claim, demand or other matter to
  which Indemnitor's indemnification obligations apply and shall give
  Indemnitor a reasonable opportunity to defend the same at its own expense
  and with counsel of its own selection reasonably acceptable to
  Indemnitee; provided, that Indemnitee shall at all times, also have the
  right to fully participate in the defense at its own expense.  Indemnitor
  may, at its own discretion, settle any dispute, demand or claim defended
  by it hereunder; provided, any such settlement shall be solely for
  Indemnitor's account and Indemnitee shall not be liable for any amounts
  whatsoever payable in connection with any such settlement.  If Indemnitor
  shall, within a reasonable time after notice to it, fail to so defend,




   <PAGE>

                                                      PAGE 33

  Indemnitee shall have the right, but not the obligation, to undertake the
  defense of, and to compromise or settle (exercising reasonable business
  judgment), the claim or other matter on behalf, and at the risk of,
  Indemnitor.


                                    ARTICLE XI.
                        POST-CLOSING RIGHTS AND OBLIGATIONS

       11.1  Cooperation.  Sellers and Rentech and Subsidiary shall
  cooperate with each other as reasonably required to complete an orderly
  and efficient transition of the ownership, operation and management of
  the Businesses from Sellers to Subsidiary.

       11.2  Preservation of Records.  At the Closing, Sellers shall
  deliver to Subsidiary's control all of the books, records, and other
  documents or information relating to the Businesses but shall not be
  required to deliver any records, documents or other information regarding
  Sellers.  Subsidiary shall maintain, preserve and, upon reasonable
  notice, provide Sellers or its representatives access during normal
  business hours to, and the right to make copies of, all financial books
  and records, marketing and sales records, files, data, projections,
  reports, correspondence, lists, record and reports concerning customers,
  employees, and suppliers, or any dealings with federal, state and local
  government bodies and regulatory agencies or otherwise relating to or
  used in connection with the Purchased Assets that relate to periods prior
  to the Closing Date.  Subsidiary shall provide Sellers or its
  representatives prior written notice of Subsidiary's intent to destroy or
  otherwise dispose of any such books, records, correspondence, documents
  or files held pursuant to this Agreement and, upon request of Sellers or
  its representatives, shall deliver to Sellers such books, records,
  correspondence, documents or files with respect to periods prior to the
  Closing as requested by Sellers or its representatives.

       11.3  Sales and Use Tax.  Buyers shall be responsible for the
  payment of all sales, use or other transfer taxes resulting from the sale
  of the Purchased Assets and Businesses to Rentech and Subsidiary pursuant
  to this Agreement.

       11.4  Closing Date Financial Statement.  No later than thirty (30)
  days following the Closing Date, Sellers shall deliver to Rentech a copy
  of Sellers' financial statements for the period ending on the Closing
  Date.


                                   ARTICLE XII.
                                     GENERAL



   <PAGE>

                                                      PAGE 34

       12.1  Notice.  All notices, requests, demands and other
  communications hereunder shall be furnished to the other party at its
  address listed below (or such other address as provided in accordance
  with this Section 12.1), shall be in writing, and shall be sent either by
  telecopy, hand delivery, or reputable overnight courier, addressed as
  follows or to such other address or addresses of which the respective
  party shall have notified the other party.  Each such notice or other
  communication shall be effective (a) if given by telecopy, when such
  telecopy is transmitted and the transmission thereof is confirmed by the
  sender's telecopier, (b) if given by reputable overnight courier, one
  business day after being delivered to such courier or (c) if given by any
  other means, when actually received.

       (a)  If to Rentech or Subsidiary to:
            Rentech, Inc.
            Attention: Ronald C. Butz, Vice President
            1331 17th St., Ste. 720
            Denver, CO 80202

       (b)  If to Sellers, to:
            Petroleum Mud Logging, Inc./Petroleum Well Logging, Inc.
            Attention:  Hoyt L. Hudspeth
            6418-B North Santa Fe
            Oklahoma City, OK 73116

       12.2  Amendment.  This Agreement may be amended or modified only by
  a written instrument executed by the party hereto against which it is to
  be enforced.

       12.3  Expense of Parties.  Except as otherwise specifically provided
  herein, each party to this Agreement shall pay its own expenses
  (including, without limitation, the fees and expenses of their respective
  agents, representatives, counsel and accountants) incidental to the
  preparation and carrying out of this Agreement.  In the event a party
  commences legal action against another party to enforce its rights under
  this Agreement, the prevailing party in such action shall be entitled to
  recover all of its costs and expenses in connection therewith, including
  reasonable attorneys' fees and costs.

       12.4  Brokers.  Sellers agree to indemnify Rentech and Subsidiary,
  and Rentech and Subsidiary agree to indemnify Sellers, against any claim
  by any third person for any commission, brokerage, finder's fee or other
  payment based upon any alleged agreement or understanding between such
  party and such third person, whether expressed or implied from the
  actions of such party.

       12.5  Governing Law.  This Agreement is being delivered in and shall
  be construed in accordance with and governed by the laws of the state of
  Oklahoma.



   <PAGE>

                                                      PAGE 35

       12.6  Headings.  The headings contained in this Agreement are for
  reference purposes only and shall not in any way affect the meaning or
  interpretation of this Agreement.   Terms used with initial capital
  letters shall not in any way affect the meaning or interpretation of this
  Agreement.  Terms used with initial capital letters will have the
  meanings specified, applicable to both singular and plural forms, for all
  purposes of this Agreement.  All pronouns (and any variation) will be
  deemed to refer to the masculine, feminine or neuter, as the identify of
  the person may require.  The singular or plural includes the other, as
  the context requires or permits.  The word include (and any variation) is
  used in an illustrative sense rather than a limiting sense.  The word
  "day" means a calendar day.  All references to "Sections" are to sections
  of this Agreement unless indicated otherwise.

       12.7  Prior Agreements; Counterparts.  This Agreement, with its
  Exhibits and Schedules, merges and integrates all prior agreements and
  representations respecting this transaction, whether written or oral, and
  constitutes the sole agreement of the parties in connection therewith.
  This Agreement may be executed simultaneously in any number of
  counterparts, each of which shall be deemed an original, but all of which
  together shall constitute one and the same instrument.

       12.8  Assignment.  This Agreement shall not be assignable by any
  party, except that Rentech or Subsidiary may assign this Agreement to a
  corporation of which Rentech or Subsidiary is the sole shareholder
  provided Rentech and Subsidiary remain fully liable to Sellers hereunder.
  Subject to the foregoing, this Agreement shall be binding upon, and inure
  to the benefit of, and be enforceable by, the respective successors and
  permitted assigns of the Sellers, Rentech and Subsidiary.  Nothing in
  this Agreement, express or implied, is intended to confer upon any other
  person any rights or remedies under or by reason of this Agreement.

       12.9  Waiver.  The failure of any party to enforce any right arising
  under this Agreement on one or more occasions shall not operate as a
  waiver of that or any other right on that or any other occasion.

       12.10  Exclusivity of Representations.  Sellers shall not be deemed
  to have made to Rentech or Subsidiary any representation or warranty
  other than as expressly made by Sellers in Section 3.  Rentech and
  Subsidiary shall not be deemed to have made to Sellers any representation
  or warranty other than as expressly made by Rentech and Subsidiary in
  Section 6.

       12.11  Severability.  Any term or provision of this Agreement that
  is invalid or unenforceable in any situation in any jurisdiction shall
  not affect the validity or enforceability of the remaining terms and
  provisions hereof or the validity or enforceability of the offending term
  or provision in any other situation or in any other jurisdiction.


   <PAGE>

                                                      PAGE 36

       12.12  Construction.  The parties have participated jointly in the
  negotiation and drafting of this Agreement.  In the event an ambiguity or
  question of intent or interpretation arises, this Agreement will be
  construed as if drafted jointly by the parties and no presumption or
  burden of proof will arise favoring or disfavoring any party by virtue of
  the authorship of any of the provisions of this Agreement.  The parties
  intend that each representation, warranty and covenant contained herein
  will have independent significance.  If any party breaches any
  representation, warranty or covenant contained herein in any respect, the
  fact that there exists another representation, warranty or covenant
  relating to the same subject matter (regardless of the relative levels of
  specificity) which the party has not breached will not detract from or
  mitigate the fact that the party is in breach of the first
  representation, warranty or covenant.

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

  Sellers:

  PETROLEUM WELL LOGGING, INC.,         RENTECH, INC.,
     an Oklahoma corporation              a Colorado corporation


  By:                                   By:
      ------------------------------         ------------------------------
      Hoyt L. Hudspeth,                      James P. Samuels,
      Vice President                         Vice President

  PETROLEUM MUD LOGGING, INC.,          PETROLEUM MUD LOGGING, INC.,
     an Oklahoma corporation              a Colorado corporation


  By:                                   By:
      ------------------------------        ------------------------------
      Hoyt L. Hudspeth,                      James P. Samuels,
      President                              Vice President



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