RENTECH INC /CO/
S-3, 1996-09-06
ENGINEERING SERVICES
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As filed with the Securities and Exchange Commission on September 6, 1996
 
                                             Registration No. 33-         
                                             ------------------------------
 
                      SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C.  20549
 
                                   FORM S-3
 
                         Registration Statement Under
                          THE SECURITIES ACT OF 1933
 
                                 RENTECH, INC.
              (Exact name of Registrant as specified in charter)
 
               Colorado                                      84-0957421 
 -----------------------------------                    -------------------
 (State or Other Jurisdiction of                         (I.R.S. Employer
  Incorporation or Organization)                        Identification No.)
 
 1331 17th Street, Suite 720, Denver, Colorado 80202        (303) 298-8008
 ---------------------------------------------------         -------------
 (Address, including zip code and telephone number, including area code, of
 Registrant's principal executive offices and intended principal place of
 business)
 
 Dennis L. Yakobson, President, 1331 17th St. Ste. 720, Denver, Colorado
 80202 (303) 298-8008
          (Name, address and telephone number of agent for service)
 
                        Copy to:  Loren L. Mall, Esq.
                            Brega & Winters P.C.
                       1700 Lincoln Street, Suite 2222
                           Denver, Colorado  80203
 
       Approximate date of commencement of proposed sale to the public:
           As soon as practicable after the effective date hereof.
 
 If the only securities being registered on this Form are being offered
 pursuant to dividend or interest reinvestment plans, please check the
 following box.  /     /
                 ------
 
 If any of the securities being registered on this Form are to be offered on
 a delayed or continuous basis pursuant to Rule 415 under the Securities Act
 of 1933, other than securities offered only in connection with dividend or
 interest reinvestment plans, check the following box.  /  X  /
                                                        ------
 
 If this Form is filed to register additional securities for an offering
 pursuant to Rule 462(b) under the Securities Act, please check the
 following box and list the Securities Act registration statement number of
 the earlier effective registration statement for the same offering. /     /
                                                                     ------
 
 If this Form is a post-effective amendment filed pursuant to Rule 462(c)
 under the Securities Act, check the following box and list the Securities
 Act registration statement number of the earlier effective registration
 statement for the same offering. /     /
                                  ------ 
 
 If delivery of the prospectus is expected to be made pursuant to Rule 434,
 please check the following box.  /     /
                                   ------<PAGE>
<PAGE>
                                               Page 2
                        CALCULATION OF REGISTRATION FEE
 
 <TABLE>
 <CAPTION>
                                     Proposed Maximum   Proposed Maximum   Amount of
 Title of Shares     Amount to be    Offering Price     Aggregate          Registration
 to be Registered    Registered(1)   Per Unit(2)        Offering Price     Fee
 ----------------    -------------   ----------------   ----------------   ---------
 <S>                 <C>             <C>                <C>                <C> 
 Common Stock         5,109,822      $0.41              $2,095,027         $  722.42

 Common Stock         4,935,574      $0.41              $2,023,585         $  697.79
 Underlying Stock
 Purchase Warrants

 Total               10,045,396      $0.41              $4,118.612         $1,420.21

<FN>

 (1)     Subject to adjustment pursuant to the anti-dilution provisions as allowed by Rule 416. 
 (2)     Average of the closing bid and asked prices as quoted on NASDAQ on September 3, 1996,
 pursuant to Rule 457(c).  Estimated solely for the purpose of calculating the registration fee
 pursuant to Rule 457(c).

</TABLE>
 
   The Registrant hereby amends this Registration Statement on such date or
   dates as may be necessary to delay its effective date until the
   Registrant shall file a further amendment which specifically states that
   this Registration Statement shall thereafter become effective in
   accordance with Section 8(a) of the Securities Act of 1933 or until the
   Registration Statement shall become effective on such date or dates as
    the Commission, acting pursuant to said Section 8(a), may determine.<PAGE>
<PAGE>
                                                  PAGE 3
                      Subject to Completion, September 6, 1996
 
   P   R   O   S   P   E   C   T   U   S
   -------------------------------------
                                  RENTECH, INC.
   
                 10,045,396 Shares Common Stock ($.01 par value)
   
        THESE SECURITIES ARE SPECULATIVE AND INVOLVE A HIGH DEGREE OF RISK. 
   
                      SEE RISK FACTORS BEGINNING AT PAGE 3.
   
        This Prospectus relates to 10,045,396 shares of common stock, $.01
   par value per share (the "Common Stock"), of RENTECH, INC. (the
   "Company") sold by the Company in private placements in August 1996 and
   earlier, including 4,935,574 shares of Common Stock issuable upon
   exercise of stock purchase warrants issued by the Company to the
   purchasers of Common Stock in private placements.  The stock purchase
   warrants are  exercisable at $.25 per share and expire September 20, 1997
   or one year after the date of issuance of the warrants.  The latter date
   may be as late as July 31, 1999.  The Shares now held by the Selling
   Shareholders and the shares of Common Stock that may be
   acquired by the Selling Shareholders upon exercise of the stock purchase
   warrants are collectively called the "Shares."  The Selling Shareholders
   are identified in this  Prospectus under the heading "Selling
   Shareholders." 
 
        The Shares may be offered by Selling Shareholders from time to time: 
   (i) in transactions in the over-the-counter market, on the automated
   inter-dealer system on which shares of Common Stock of the Company are
   then listed, in negotiated transactions, or a combination of such methods
   of sale, and (ii) at market prices prevailing at the time of sale, at
   prices related to such prevailing market prices, or at negotiated prices.
   The Selling Shareholders may effect such transactions by selling the
   Shares to or through securities broker-dealers.  Such broker-dealers may
   receive compensation in the form of discounts, concessions, or
   commissions from the Selling Shareholders and/or the purchasers of the
   Shares for whom such broker-dealers may act as agent or to whom they sell
   as principal, or both (which compensation as to a particular broker-
   dealer might be in excess of customary commissions).  See "Selling
   Shareholders" and "Plan of Distribution."  Selling Shareholders may also
   sell such shares pursuant to Rule 144 or Rule 144A under the Securities
   Act of 1933 if the requirements for the availability of such rules have
   been satisfied. 
   
        None of the proceeds from the sale of the Shares by the Selling
   Shareholders will be received by the Company.  The Company has, however,
   received the net purchase price paid for the Shares upon the purchase of
   the Shares in a recent private placement, as described herein under "Use
   of Proceeds."  The Company intends to use the net proceeds it has
   received from the recent private placement for operating expenses.  See
   "SUMMARY--Use of Proceeds."  The Company will receive proceeds with
   respect to and to the extent of exercise of the stock purchase warrants.
   
        The Company has agreed to bear all expenses (other than underwriting
   discounts, selling commissions and underwriter expense allowance, and
   fees and expenses of counsel and other advisers to the Selling Share-
   holders) in connection with the registration and sale of the Shares being
   offered by the Selling Shareholders.  The Company has agreed to indemnify
   the Selling Shareholders against certain liabilities, including
   liabilities under the Securities Act of 1933, as amended (the "Securities
   Act").
   
        The Common Stock of the Company is listed and traded on NASDAQ on
   the Small Cap Market under the symbol "RNTK."  On September 3, 1996, the
   last reported sale price of the Common Stock was $.41 per share.
 
        THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
   SECURITIES AND EXCHANGE COMMISSION, NOR HAS THE COMMISSION PASSED UPON
   THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE
   CONTRARY IS A CRIMINAL OFFENSE.
   
                 The date of this Prospectus is ________________, 1996<PAGE>
<PAGE>
                                                 Page 4
                              AVAILABLE INFORMATION
        The Company is subject to the informational requirements of the
   Securities Exchange Act of 1934 (the "Exchange Act") and in accordance
   therewith, files reports and other information with the Securities and
   Exchange Commission (the "Commission").  Proxy statements, reports and
   other information concerning the Company can be inspected and copied at
   Room 1024 of the Commission's office at 450 Fifth Street, N.W.,
   Washington, D.C. 20549, and the Commission's Regional Offices in Denver
   (Suite 4800, 1801 California Street, Denver, Colorado 80202), New York
   (Room 1228, 75 Park Place, New York, New York 10007), and Chicago (Suite
   1400, Northwestern Atrium Center, 500 West Madison Street, Chicago,
   Illinois 60621-2511), and copies of such material can be obtained from
   the Public Reference Section of the Commission at 450 Fifth Street, N.W.,
   Washington, D.C. 20549, at prescribed rates.  This Prospectus does not
   contain all information set forth in the Registration Statement of which
   this Prospectus forms a part and exhibits thereto which the Company has
   filed with the Commission under the Securities Act and to which reference
   is hereby made.  
 
                       DOCUMENTS INCORPORATED BY REFERENCE
        The Company will provide, without charge, to each person to whom a
   copy of this Prospectus is delivered, including any beneficial owner,
   upon the written or oral request of such person, a copy of any or all of
   the documents incorporated by reference herein (other than exhibits to
   such documents, unless such exhibits are specifically incorporated by
   reference into the information that the Prospectus incorporates).
   Requests should be directed to: 
                  Rentech, Inc.
                  1331 17th Street, Suite 720
                  Denver, Colorado 80202
                  Telephone number:  (303) 298-8008
                  Attention:  James P. Samuels, Chief Financial Officer
   
        The following documents filed with the Commission by the Company
   (File Number 0-19260) are hereby incorporated by reference into this
   Prospectus:
   1.     The Company's Annual Report on Form 10-KSB for the fiscal year
          ended December 31, 1995; 
   2.     The Company's Quarterly Report on Form 10-QSB for the quarterly
          period ended March 31, 1996;
   3.     The Company's Current Report on Form 8-K dated January 19, 1996;
   4.     The Company's Current Report on Form 8-K dated February 13, 1996;
   5.     The Company's Quarterly Report on Form 10-QSB for the quarterly
          period ended June 30, 1996;
   6.     The Company's Current Report on Form 8-K dated September 5, 1996;
          and
   7.     The Company's Amendment No. 1 dated September 5, 1996 to Annual
          Report on Form 10-KSB for the fiscal year ended December 31, 1995.
 
        All documents filed with the Commission by the Company pursuant to
   Sections 13(a), 13(c), 14, or 15(d) of the Exchange Act subsequent to the
   date of this Prospectus and prior to the termination of the offering
   registered hereby shall be deemed to be incorporated by reference into
   this Prospectus and to be a part hereof from the date of the filing of
   such documents.  Any statement contained in a document incorporated or
   deemed to be incorporated by reference herein shall be deemed to be
   modified or superseded for purposes of this Prospectus to the extent that
   a statement contained herein or in any subsequently filed document which
   also is or is deemed to be incorporated by reference herein modifies or
   supersedes such statement.  Such statement so modified or superseded
   shall not be deemed, except as so modified or superseded, to constitute
    a part of this Prospectus.<PAGE>
 <PAGE>
                                                 Page 5
                                      SUMMARY
   
   The Company
   
        Rentech, Inc. ("Rentech" or the "Company") was organized as a
   Colorado corporation in 1981 to develop and exploit processes for the
   conversion of low-value carbon-bearing solids and gases into valuable
   liquid hydrocarbons including premium diesel fuel, naphthas and waxes. 
   The technical feasibility, that is, ability of the Company's conversion
   process to convert carbon-burning gases into valuable liquid hydro-
   carbons"Rentech Process Technology " or the "Technology"), was
   established in the Company's first pilot plant and again in its second
   pilot plant operated during 1989.
   
        The Rentech Technology uses as feedstock natural gas from gas wells
   that are not producing or that flare gas, or synthesis gas, a mixture of
   hydrogen and carbon monoxide gases, produced by gasification of coal. 
   These sources of fuel are in abundant supply worldwide.  The Technology
   can provide a means of utilizing gas resources that are currently
   unmarketable due to their remote locations or because of the presence of
   diluents such as carbon dioxide or nitrogen.  Other sources of feedstock
   include methane, a gas collected from coal beds, as well as industrial
   off gases. 
   
        The diesel fuel produced to date by using the Technology has been
   tested to have a sulphur content below detectable limits and to have
   improved combustion characteristics when compared to commercial No. 2
   diesel fuel.  Therefore, it is less polluting than presently available
   diesel fuel, and, unlike alternative fuels such as methanol or compressed
   natural gas, does not require any engine or vehicle modifications for
   use.  Based upon prices of crude oil at about $18 per barrel, and
   commercial No. 2 diesel fuel at approximately $.50 per gallon, management
   believes the diesel fuel can be produced and sold at competitive prices
   and, particularly in view of the requirements of the federal Clean Air
   Act, may be saleable at premium prices.  The Technology has the potential
   of reducing, in this and other countries, dependency upon imports of
   crude oil and petroleum products.
   
        The Company's business is licensing the Rentech Technology,
   including sale of its proprietary catalyst, in exchange for license fees
   and ongoing royalties on the production of liquid hydrocarbons from
   conversion plants that use the Technology and are constructed and owned
   by licensees.  Rentech has licensed its Technology for use in India for
   a plant now under final design for construction by its Indian licensee
   at Arunachal Pradesh, India.  That plant will be the first commercial
   plant to use the Company's Technology.  Rentech is providing its Indian
   licensee engineering design and technical services under contract, and
   will provide such services to subsequent licensees for their use in
   constructing their plants, together with engineering services and startup
   operational support services on a fee basis for licensed plants.  In
   addition, Rentech may reserve the right to contract for the engineering
   and supply the synthesis gas conversion reactor modules that are
   essential to use of its Technology in conversion plants. 
   
        At present the gas conversion Technology is not generating
   sufficient cash flow to sustain the operations of the Company.  As
   previously announced by management, the Company has been exploring other
   business opportunities, with a goal of diversifying into other businesses
   and generating cash flow.  The Company has obtained capital for near term
   operations by making a private placement offering in August 1996 that
   provided net proceeds of approximately $723,000.  The Company expects
   that it will be able to continue operations through the first quarter of
    1997, at which time, if the Company is unsuccessful in its efforts to<PAGE>
<PAGE>
                                                 Page 6
   create revenue necessary to provide for all ongoing expenses and broaden
   its business base, the Company expects to suspend the expense side of its 
   operations to assure its Nasdaq listing and company liquidity.  In such
   event, the Company will function on a reduced basis until licensing fees
   and design contract payments expected in 1997 and thereafter are
   collected from the gas conversion licensee and the Company is able to
   acquire or merge its entity with another public organization.  See "RISK
   FACTORS." 
   
        The Company intends to continue its business of licensing its
   Technology, including attempts to enter into arrangements for a second
   plant in India that is now under discussion.  At the same time, the
   Company expects to acquire other technologies or assets in other fields
   of business.  Acquisitions are sought both to increase the Company's
   total assets in order to maintain the Company's qualifications to remain
   listed on the Nasdaq Small Cap Market and to increase the Company's
   revenues.  The Company expects that it might be able to obtain other
   technologies or assets through the issuance of shares of its Common Stock
   or whose owners might be able to offset their taxable earnings against
   the Company's net operating loss carryforward of approximately $8,500,000
   as of December 31, 1995.  There are no agreements with any such
   companies, and there can be no assurances that any such undertakings will
   be concluded. See "RISK FACTOR NO. 3." 
   
        The executive offices of the Company are located at 1331 17th
   Street, Suite 720, Denver, Colorado 80202, telephone (303) 298-8008,
   fax (303) 298-8010.
   
   
   Use of Proceeds
   
        The 5,109,822 Shares and 4,935,574 Shares of Common Stock issuable
   upon conversion of the stock purchase warrants, respectively, are being
   offered for the account of Selling Shareholders.  The Company will not
   receive any proceeds from their sale of their Shares, but it will receive
   approximately $1,200,000 if all of the stock purchase warrants are
   exercised, of which there is no assurance.  The Company intends to use
   any net proceeds from the exercise of the warrants for working capital
   and general corporate purposes. 
   
   
                                   RISK FACTORS
   
        The securities offered hereby involve a high degree of risk. 
   Prospective investors, prior to making an investment, should carefully
   consider the following risks and speculative factors inherent in and
   affecting the business of the Company and an investment in the Shares.
   
        1.  Lack of Profitable Operations.  From inception on December 31,
   1981, through June 30, 1996, the Company sustained losses aggregating
   $7,576,605, including a loss of $1,450,049 for the 1994 fiscal year, a
   loss of $2,452,823 for the 1995 fiscal year, and a loss of $267,359 for
   the first half of 1996.  As of June 30, 1996 and December 31, 1995, the
   Company had a working capital deficit of $391,443 and $388,159.  A
   substantial portion of the losses is attributable to research and
   development expenses incurred by the Company in connection with
   development of the Technology through 1989.  The suspension of the
   Company's engineering design contract for the Henan Project in China and
   the resulting liquidation of the Company's Future Fuels Pty Ltd.
   subsidiary resulted in a loss of the investment in Future Fuels recorded
   at approximately $501,000 for the 1995 fiscal year.  At December 31, 1992
   the Company had working capital of $2,344,607.  During 1993 the Company
   applied that working capital and approximately $1.5 million raised in
  <PAGE>
                                                   Page 7
   equity financing during the fourth quarter of 1993 to cover the costs
   previously incurred in retrofitting its Synhytech plant and demonstrating
   use of its Technology under commercial operating conditions in the plant
   in order to induce potential licensees to build plants using the
   Company's Technology.  There are no assurances that licensees will
   complete construction of plants to use the Technology, and no assurances
   that such completed plants, if any, will be operated profitably by the
   licensees.  Because the Company's future income depends upon revenues
   associated with successful plants or its acquisition of other profitable
   business or assets, none of which is assured, there are no assurances
   that the Company will be profitable in the future, or that it will be
   able to continue in operation as a going concern.  The report of the
   Company's independent auditors for the fiscal year ended December
   31, 1995 notes that the Company has suffered recurring losses from
   operations and has a working capital deficiency which raises substantial
   doubt about its ability to continue as a going concern.
   
        2.  Economic Feasibility of Technology Not Assured.  The Company's
   demonstration of its Technology in its Synhytech plant was not intended
   to test the economic feasibility of the Technology and therefore did not
   establish its economic feasibility.  Whether any full-scale conversion
   plant using the Technology can be profitably operated depends upon the
   availability of low-cost feedstock, cost-efficient production of the
   liquid hydrocarbons and a ready market for the end products (primarily
   premium diesel fuel, naphthas and waxes) at reasonable prices.  The fact
   that the Synhytech plant could not be operated on a commercial basis
   because of inadequacy of the feedstock from the landfill and the
   prohibitive cost of bringing in other feedstock gas may hamper
   development and construction of additional conversion plants.  The diesel
   fuel produced by the Technology has not been subjected to long-term
   engine tests to determine if there are any adverse effects.  No in-depth
   cost or price studies have been prepared by independent third parties for
   the Company.  Any significant decrease in prices of crude oil below
   approximately $18 or commercial No. 2 diesel fuel below approximately
   $.50 per gallon could have a material adverse effect upon the Company.
   
        3.  Business Dependent Upon Acquisition of Other Businesses or
   Assets or Merger.  While the Company intends to continue its business
   related to its Technology, the past revenues have been inadequate to
   sustain the Company's operations, and future revenues from the Technology
   will also be insufficient in the next 12 months.  Thus the Company's
   ability to continue its operations as a going concern depends upon its
   acquisition of other businesses or assets or its merger with another
   successful business, or several such transactions, at least one of which
   must be completed before the Company's operating capital has been
   exhausted.  There are no assurances that any such transactions will be
   successfully concluded. See "SUMMARY--Use of Proceeds."
   
        4.  Dependence upon Management.  At this stage of the Company's
   development, success of the Company depends upon the ability of
   management to demonstrate and implement the technological and commercial
   feasibility of the Technology, as well as to accomplish diversification
   of its business.  Design of plants and their startup, both of which could
   require knowledge unique to the Company's technical personnel, are
   required to achieve optimal process plant operations.  Moreover, to
   successfully compete with its Technology, the Company will be required to
   engage in continuous research and development regarding not only the
   conversion process and catalyst composition, but also products, markets
   and costs.  Loss of the services of the executive officers of the
   Company, particularly Drs. Charles B. Benham or Mark S. Bohn due to their
   technical expertise and knowledge, and Dennis L. Yakobson and Ronald C.
   Butz due to their established relationships with licensees and others,
   could be expected to have a material adverse effect upon the Company.
     <PAGE>
                                                  Page 8
   The Company's employment contracts with Dr. Benham, Mr. Yakobson and Mr.
   Butz expire on March 31, 1997.  It has no employment contract with Dr.
   Bohn who works for the Company on a part-time basis.  The Company has
   obtained key-man insurance (as to which the Company is the sole
   beneficiary) on the lives of Drs. Benham and Bohn in the amounts of
   $500,000 each.  The Company's basic proprietary information has been
   reduced to tangible form, which will protect the Company in the event of
   loss of its technical personnel, but which also will expose the Company
   to greater risk of unauthorized dissemination and duplication of that
   information notwithstanding controls established by the Company.
   
        5.  Loss of Proprietary Information.  One of the keys to the
   conversion process upon which the Technology depends is the catalyst
   developed by the Company.  The Company will require any catalyst
   manufacturer that it licenses or catalyst joint venture partners to
   maintain the confidentiality of the formula and to use it only for the
   agreed purposes.  In addition, Company personnel having access to the
   formula and other proprietary Company information have signed
   confidentiality agreements.  Finally, the Company requires
   confidentiality covenants in its license agreements and design and
   construction contracts.  However, no assurance can be given that such
   persons will not violate the terms of their agreements or that
   competitors will not be able to determine the components of the
   catalyst or other proprietary Company information.  In either event,
   the ability of the Company to compete could be materially and adversely
   affected.
   
        6.  Effect of Competition.  The products of the Technology will
   compete with other petroleum products, including products produced by
   related methods.  To a great extent, competition will be based upon
   price, although compliance with environmental laws may create demand for
   the Company's low aromatic, sulphur-free diesel fuel even at premium
   prices.  While the Company definitely faces price and product
   competition, management is not aware of any competing technology, either
   existing or under development, that may be cost effective on the
   relatively small scale contemplated to be economically viable for
   conversion plants using the Technology.  However, others have and are
   actively seeking to develop technology that will enable similar results.
   It must be presumed that research in this area will continue and that
   other persons will attempt, perhaps successfully, to reproduce the
   catalyst and copy the Technology or develop a similar process,
   particularly if the commercial viability of the process is confirmed.
   The most likely competition will come from major corporations in the oil
   and gas and synthetic fuel industries that have vastly greater technical
   and financial resources than the Company. 
   
        7.  Effect of Patent Infringement.  To the knowledge of management,
   no portion of the Technology infringes upon any previously issued and
   unexpired United States patent.  However, no patent searches have been
   conducted, and no such assurance can be given.  In the event it should be
   determined that the Company's patents or proprietary processes are
   infringing upon another patent, the Company will be compelled to seek a
   license from the holder of that patent or to modify its Technology to
   avoid such infringement, or both, neither of which may be possible.
   Several U.S. patents have been issued to the Company, but it is possible
   that third parties could infringe upon those patents, either innocently
   or deliberately.  In either case, to protect the Technology the Company
   may be compelled to seek legal redress.  The license agreement entered
   into by the Company requires that the Company both prosecute and defend
   infringement actions at its cost.  In the event the Company does not have
   sufficient funds for that purpose, it could incur substantial economic
   loss, including termination of license agreements and loss of all or
   portions of the economic benefit attributable to ownership of the
  <PAGE>
                                                 Page 9
 
   Technology and equity interests in conversion plants.  The Company does
   not now have and may never have adequate funds for that purpose.
   
        8.  Limited Protection Afforded by Patents.  The Company has filed a
   United States patent application with several claims covering certain
   process applications, products produced, and materials used in its
   process.
 
   Several patents have been issued, and other claims are still pending.
   U.S. patents that may be issued have a term of 20 years.  The Company
   presently requires non-disclosure agreements from all persons having
   access to its proprietary information.  Its patents and any future
   patents it may be granted as well as its non-disclosure agreements will
   be difficult and expensive to enforce, and may not be upheld by the
   courts, especially those of foreign nations.  Inability to protect any
   patents or enforce it non-disclosure agreements, especially in foreign
   countries where much of the Company's business may be established, could
   enable others to take advantage of the Company's Technology without
   compensating it, causing it substantial economic loss. 
   
        9.  Need for Inexpensive Feedstock to Produce Products that Are
   Competitively Priced.  Successful exploitation of the Company's
   Technology depends upon the availability of substantial quantities of
   carbon-bearing, low-cost feedstock for plants that use the Technology.
   Management believes such feedstock gas will be readily available from
   sources such as natural gas wells that are not producing gas because of
   remote locations, and from other sources such as synthesis gas produced
   by gasification of coal, as well as industrial off gases.  However, in
   the event low-cost gas cannot be obtained, then plants using the
   Technology may not be able to produce products for sale at competitive
   prices.  Although the cost of diesel fuel produced at the plants may
   require that it be sold at prices somewhat higher than competing diesel
   fuels, management expects that many users, particularly those subject to
   the increasingly strict mandates of the Clean Air Act, will pay that
   premium.  At prices for crude oil at approximately $18 per barrel and
   diesel fuel at approximately $.50 per gallon, management believes that
   the diesel fuel produced using the Technology can be priced
   competitively.  However, no such assurance can be given.  Also, should
   oil or commercial No. 2 diesel fuel prices both decrease significantly,
   any market for the Company's diesel fuel that may hereafter exist could
   be adversely affected.  
   
        10.  Lack of End Product Purchase Contracts.  The Company has
   previously contacted various potential purchasers of the products of the
   Technology, primarily users of diesel fuel, but has no contracts for
   purchase of the end products of its Technology.  The Company's licensees
   are responsible for marketing products from plants constructed by them.
   Because the diesel fuel produced is relatively non-polluting, it is
   believed that metropolitan transportation districts and other users of
   fuel in urban areas having air pollution problems may be interested in
   purchasing such fuel, possibly at a premium over the price of commercial
   diesel fuel.  However, no such assurance can be given. 
   
        11.  Risk of Joint Ventures.  While the Company does not presently
   anticipate investing in the construction of gas conversion plants that
   use its technology, such investments are possible in the future.  The
   Company may enter into joint ventures with third parties for construction
   and operation of conversion process plants, catalyst manufacturing plants
   or both.  Joint ventures under certain circumstances may involve risks
   not otherwise present including, for example, the possibility that a
   co-venturer may become insolvent or bankrupt; that any such co-venturer
   may at any time have economic, business interests or goals that are
  <PAGE>
                                                  Page 10
   inconsistent with the business interests or goals of the Company; or that
   such co-venturer may be in a position to take action contrary to the
   instructions or requests of the Company or contrary to its policies or
   objectives.  Among other things, actions by such a co-venturer might have
   the result of subjecting the property, the other co-venturers or both to
   liabilities in excess of those contemplated.
   
        12.  Liabilities Imposed by Environmental Laws.  Some of the
   products of the Technology contain small amounts of toxic substances,
   such as  alcohols, aldehydes, ethers and aromatics.  Also, owners of
   conversion plants, including the Company, if it acquires any such
   ownership, will be subject to the risk of releases of hazardous materials
   into the environment.  Although management expects to adopt stringent
   operational controls and procedures in conversion plants in which it has
   a controlling equity interest and to require appropriate warnings
   regarding possible product toxicity, no assurance can be given that the
   Company will be able, in all instances, to comply with applicable
   environmental laws.  Any such failure could result in substantial
   liability to the Company.  
   
        13.  Risk of Currency Exchange Rates.  In its offshore operations,
   the Company expects it will usually be paid design contract fees, license
   fees, royalties and other compensation denominated in the currency of the
   subject country.  The Company will thus be subject to the risk of
   fluctuation of currency exchange rates.  Whenever possible, however,
   management intends to negotiate payment in U.S. dollars.  In addition,
   some countries may have laws that could adversely affect the ability of
   the Company to remove funds from that country, may impose taxes upon such
   removal, or limit the amount of the payments that a licensee can make to
   the Company.
   
        14.  Uninsured Losses.  The Company has obtained insurance of the
   types and in the amounts management believes are customarily obtained for
   businesses similarly situated.  However, certain types of losses
   (generally clean-up costs for environmental contamination or losses of a
   catastrophic nature such as damage to a process plant in which the
   Company holds an interest caused by fire, explosion, war, earthquakes and
   floods) are either uninsurable or not economically insurable.  Should an
   uninsured or partially insured loss occur, the Company could suffer a
   loss of invested capital and any profits that might otherwise have been
   anticipated.
   
        15.  No Expectation of Dividends.  No dividends have been paid on
   the Company's Common Stock since inception, and it is highly unlikely
   that any dividends will be paid in the near term due to existing capital
   needs.  However, if the business plan is successful, the Company may
   generate substantial revenue from license fees and royalties related to
   its Technology, as well as revenues from new businesses or assets, which,
   barring unanticipated capital commitments, is expected to allow payment
   of dividends.  No assurance can be given, however, that the Company will
   ever pay, or be in a position to pay dividends.
   
        16.  Potential Dilution Due to Exercise of Stock Options and
   Additional Private Offerings.  The Company has reserved 842,280 shares of
   Common Stock for issuance upon exercise of presently outstanding stock
   options and 1,032,000 for issuance upon purchase under outstanding stock
   purchase warrants.  The Company may issue additional shares of its Common
   Stock to raise operating capital or acquire other businesses or assets.
   Issuances of additional shares of Common Stock will reduce the percentage
   ownership interest in the Company represented by shares of Common Stock
   acquired by purchasers and may dilute the value of their interest in the
   Company.
   
 <PAGE>
                                                 Page 11
   
        17.  Potential Dilution of Shareholder Rights by Issuance of
   Preferred Stock.  The Company is authorized to issue up to 1,000,000
   shares of preferred stock, par value $10 per share.  The preferred stock
   may be issued in one or more series, the terms of which will be
   determined at the time of issuance by the board of directors without any
   requirement for shareholder approval.  Such rights may include voting
   rights, preferences as to dividends and, upon liquidation, conversion and
   redemption rights, and mandatory redemption provisions pursuant to
   sinking funds or otherwise.  No preferred stock is currently outstanding,
   and the Company has no present plans for issuance thereof.  However, any
   issuance of preferred stock could affect the rights of the holders of
   Common Stock and therefore reduce the value of the Common Stock.  Rights
   could be granted to holders of preferred stock hereafter issued which
   could reduce the attractiveness of the Company as a potential takeover
   target.  See "DESCRIPTION OF SECURITIES - Preferred Stock."  
   
        18.  Deterrence of Tender Offers by Fair Price Provisions.  The
   Company's Articles of Incorporation include provisions designed to assure
   shareholders, to the extent possible, that any hostile takeover attempt
   or merger of the Company with a significant shareholder or its affiliate
   will result in shareholders receiving a fair value for their securities. 
   These provisions include grouping of the board of directors into three
   classes with staggered terms; a requirement that directors may be removed
   without cause only with the approval of the holders of 66-2/3% of the
   outstanding  voting power of the capital stock of the Company; and a
   requirement that the holders of not less than 66-2/3% of the voting power
   of the outstanding capital stock of the Company approve certain business
   combinations of the Company with any holder of more than 10% of such
   voting power or an affiliate of any such holder unless the transaction is
   either approved by at least a majority of the uninterested and
   unaffiliated members of the board of directors or unless certain minimum
   price and procedural requirements are met.  These provisions could deter
   a hostile tender offer by a third party for the purchase of some or all
   of the Company's outstanding securities and could have the effect of
   entrenching management.  See "DESCRIPTION OF SECURITIES - Fair Price
   Provisions." 
      <PAGE>
<PAGE>
                                                 Page 12
   
                               SELLING SHAREHOLDERS
   
        The shares of Common Stock owned by the Selling Shareholders and the
   shares of Common Stock (the "Shares") underlying stock purchase warrants
   held by them are being offered by the Selling Shareholders identified in
   the following table.
   <TABLE>
   <CAPTION>
                                                                      Number of Shares
                                                        Number of     to be Beneficially Owned
Name of                          Number of Shares       Shares That   On Completion of the
Offering
Selling                          Beneficially Owned    May Be                             % of
Shareholder                      Record    Indirect   Offered(1)    Record    Indirect   Class
- -----------                      ------    --------   ----------   ------    --------   -----
<S>                              <C>       <C>        <C>           <C>       <C>       <C>
Charles B. Benham(2)             275,440   ---        320,880      115,000    ---       *
Mark S. Bohn(3)                  443,431   ---         91,046      352,385    ---       3.2
Ronald C. Butz(4)                164,151   ---        160,440      238,154    ---       2.1
Stephen Bushansky                 31,250   ---         62,500       ---       ---       *
C. David Callahan                 31,250   ---         62,500       ---       ---       *
Kenneth D. Carlson                31,250   ---         62,500       ---       ---       *
William Carmichael               250,000   ---        500,000       ---       ---       *
Conch Bar Enterprises, Inc.      125,000   ---        250,000       ---       ---       1.1
Bartley W. Conroy                 81,224   ---        162,448        2,226    ---       0
D.S.N. Enterprises, Ltd.         125,000   ---        250,000       ---       ---       0
Gulf Coast Consultants, Inc.     265,555   ---        265,555       ---       ---       0
Gulf Coast Trust                  62,500   ---        125,000       ---       ---       0
Hauser Chemical Research, Inc.    17,143   ---         17,143       ---       ---       0
Kent T. Hultquist                 62,500   ---        125,000       ---       ---       0
Donald Hunter                    125,000   ---        250,000       ---       ---       0
C.E. Husted                       35,000   ---         70,000       ---       ---       0
IMC, Inc.                         50,461   ---         50,461       ---       ---       0
Leslie N. & Ann Johnson          125,000   ---        250,000       ---       ---       0
Paul D. Jorgensen                102,500   ---        125,000       40,000    ---       *
Fred E. Karp                      31,250   ---         62,500       ---       ---       0
Tommy L. Keith                   125,000   ---        250,000       ---       ---       *
James Kuo                          6,089   ---          6,089       ---       ---       0
Joseph F. Lambright              250,000   ---        500,000       ---       ---       0
William H. Lacy                  100,000   ---        100,000       ---       ---       0
Laredo Properties                125,000   ---        250,000       ---       ---       0
Loren L. Mall                    180,952   ---        350,000      130,952    ---       1.2
Roger Mariani                     31,250   ---         62,500       ---       ---       0
Mark G. Milask                   125,000   ---        250,000       ---       ---       0
Dr. Mohan S. Misra               120,000   ---        240,000       ---       ---       0
Neil J. Montagino                125,000   ---        250,000       ---       ---       *
Will A. Mosley                    31,250   ---         62,500       ---       ---       0
Philip S. Mushlin                165,000   ---        250,000       40,000    ---       *
Stanley E. Norfleet               62,500   ---        125,000       ---       ---       *
Craig K. Olson                    31,250   ---         62,500       ---       ---       *
Satish B. Parekh                 286,494   ---        200,000      186,494    ---       1.2
Russell A. Pareti                 31,250   ---         62,500       ---       ---       0
Kevin S. Parson                  125,000   ---        250,000       ---       ---       0
Ned F. Parson                    125,000   ---        250,000       ---       ---       0
Rebecca C. & Gary R. Perrine     125,000   ---        250,000       ---       ---       0
Ralph Riggs                       62,500   ---        125,000       ---       ---       0
Rodriguez Family Partners, Ltd.  250,000   ---        500,000       ---       ---       0
James P. Samuels                 125,000   ---        250,000       ---       ---       0
Schneider Holdings Co.           125,000   ---        250,000       ---       ---       1.2
Norman Seif                       31,250   ---         62,500       ---       ---       0
Jay Thomas Smith                  31,250   ---         62,500       ---       ---       0
Michael Gary Solomon             125,000   ---        250,000       ---       ---       0
Robert John Stalberger            31,250   ---         62,500       ---       ---       0
Superior Reporting Services,      31,250   ---         62,500       ---       ---       0
   Inc.
Dr. Erich W. Tiepel(5)           122,402   ---        162,448       41,178    ---       2.8
Sampson Junior Williams          162,500   ---        100,000      100,000    ---       *
Dennis L. Yakobson(6)            404,354   ---        166,200      238,154    ---       2.1
                                                   ----------
      Total                                        10,045,396
<FN>
    *Less than 1%
(1)  Includes shares covered by presently exercisable stock purchase warrants. 
(2)  Does not include 297,322 shares subject to options to purchase.
(3)  Does not include 177,928 shares subject to options to purchase.
(4)  Does not include 257,322 shares subject to options to purchase.
(5)  Does not include 233,106 shares subject to options to purchase.
(6)  Does not include 263,082 shares subject to options to purchase.

/TABLE
<PAGE>
   <PAGE>
                                                 Page 13
   
        Charles H. Benham, Mark S. Bohn, Ronald C. Butz and Dennis L.
   Yakobson are officers and directors of the Company.  Erich W. Tiepel is a
   director.  Loren L. Mall is associated with Brega & Winters P.C. which
   serves as general counsel for the Company.  To the knowledge of the
   Company, none of the other  Selling Shareholders nor any officers,
   directors or employees of a Selling Shareholder have held any office,
   position or other material relationship with the Company, its
   predecessors or affiliates during the past three years. 
  
        Each Selling Shareholder have represented that he purchased the
   Common Stock for investment and with no present intention of distributing
   or reselling such Shares unless registered for resale.  However, in
   recognition of the fact that holders of restricted securities may wish to
   be legally permitted to sell their Shares when they deem appropriate, the
   Company has filed with the Commission under the Securities Act a Form S-3
   registration statement of which this Prospectus forms a part with respect
   to the resale of the Shares from time to time in the over-the-counter
   market or in privately negotiated transactions..  The Company has agreed
   to prepare and file such amendments and supplements to the Registration
   Statement and to use its best efforts to obtain effectiveness of the
   Registration Statement and to keep the Registration Statement effective
   until all the Shares offered hereby have been sold pursuant thereto,
   until such Shares are no longer, by reason of Rule 144 under the
   Securities Act or any other rule of similar effect, required to be
   registered for the sale thereof by the Selling Shareholders, or for a
   period of 180 days, whichever occurs first. 
   
        Certain of the Selling Shareholders, their associates and affiliates
   may from time to time be customers of, engage in transactions with,
   and/or perform services for the Company or its subsidiaries in the
   ordinary course of business.  
   
   
                               PLAN OF DISTRIBUTION
   
        The sale of the Shares by the Selling Shareholders may be effected
   from time to time (i) in transactions in the over-the-counter market, in
   negotiated transactions, or through a combination of such methods of
   sale, and (ii) at market prices prevailing at the time of sale, at prices
   related to such prevailing market prices or at negotiated prices.  The
   Selling Shareholders may effect such transactions by selling the Shares
   to or through broker-dealers, and such broker-dealers may receive
   compensation in the form of discounts, concessions, or commissions from
   the Selling Shareholders and/or the purchasers of the Shares for which
   such broker-dealers may act as agent or to whom they may sell, as
   principal, or both (which compensation as to a particular broker-dealer
   may be in excess of customary compensation).  Selling Shareholders may
   also sell such shares pursuant to Rule 144 or Rule 144A under the
   Securities Act of 1933 if the requirements for the availability of such
   rules have been satisfied. 
   
         The Selling Shareholders and any broker-dealers who act in
   connection with the sale of the Shares hereunder may be deemed to be
   "underwriters" within the meaning of Section 2(11) of the Securities Act,
   and any commissions received by them and profit on any resale of the
   Shares as principal might be deemed to be underwriting discounts and
   commissions under the Securities Act.  
   
      <PAGE>
<PAGE>
                                                 Page 14
   
        The Company has advised the Selling Shareholders that they and any
   securities broker-dealers or others who may be deemed to be statutory
   underwriters will be subject to the Prospectus delivery requirements
   under the Securities Act of 1933.  The Company has also advised the
   Selling Shareholders that in the event of a "distribution" of his or its
   shares, such Selling Shareholders, any "affiliated purchasers," and any
   broker-dealer or other person who participates in such distribution may
   be subject to Rule 10b-6 under the Securities Exchange Act of 1934 ("1934
   Act") until his or its participation in that distribution is completed. 
   A "distribution" is defined in Rule 10b-6(c)(5) as an offering of
   securities "that is distinguished from ordinary trading transactions by
   the magnitude of the offering and the presence of special selling efforts
   and selling methods."  The Company has also advised the Selling
   Shareholders that Rule 10b-7 under the 1934 Act prohibits any
   "stabilizing bid" or "stabilizing purchase" for the purpose of pegging,
   fixing or stabilizing the price of the Common Stock in connection with
   this offering.
   
                 DESCRIPTION OF COMMON STOCK AND PREFERRED STOCK
   
        As of the date of this Prospectus, the Company had 16,222,788 shares
   of its Common Stock issued and outstanding.  The shares of Common Stock
   covered by this Prospectus are fully paid and nonassessable.  Holders of
   the Common Stock have no preemptive rights.  Each stockholder is entitled
   to one vote for each share of Common Stock held of record by such
   stockholder.  There is no right to cumulate votes for election of
   directors.  Upon liquidation of the Company, the assets then legally
   available for distribution to holders of the Common Stock will be
   distributed ratably among such shareholders in proportion to their stock
   holdings.  Holders of Common Stock are entitled to dividends when, as and
   if declared by the Board of Directors out of funds legally available
   therefor.
   
        The authorized capital stock of the Company consists of 100,000,000
   shares of Common Stock, $.01 par value per share, and 1,000,000 shares of
   preferred stock, $10 par value per share.  A quorum for purposes of
   meetings of common shareholders consists of a majority of the issued and
   outstanding shares of Common Stock, and once a quorum is established,
   action of a routine nature may properly be taken by a majority of the
   shares represented in person or by proxy at the meeting.  Most major
   corporate transactions such a mergers, consolidations, sales of all or
   substantially all assets, and certain amendments to the articles of
   incorporation require approval by the holders of two-thirds of the issued
   and outstanding shares entitled to vote.  The Company's board of
   directors is authorized to issue shares of Common Stock and preferred
   stock without approval of shareholders.  Shares of preferred stock may be
   issued in one or more series, the terms of which will be determined at
   the time of issuance by the board of directors without any requirement
   for shareholder approval.  Such rights may include voting rights,
   preferences as to dividends, and upon liquidation, conversion and
   redemption rights, and mandatory redemption provisions pursuant to
   sinking funds or otherwise.  No shares of preferred stock are issued and
   outstanding. 
   
                                  LEGAL OPINIONS
   
        Brega & Winters, P.C., 1700 Lincoln Street, Suite 2222, Denver,
   Colorado 80203 has rendered an opinion as to the legality of the Shares
   to be issued upon exercise of the stock purchase warrants.
   
      <PAGE>
<PAGE>
                                                 Page 15
                                     EXPERTS
   
        The financial statements incorporated in this prospectus by
   reference from the Company's Annual Report on Form 10-KSB for the fiscal
   years ended December 31, 1995 and 1994, have been audited by BDO Seidman,
   LLP, independent certified public accountants, as stated in their report,
   which is incorporated herein, and has been so incorporated in reliance
   upon such report given upon the authority of the firm as experts in
   accounting and auditing.
   
        NO DEALER, SALESMAN, OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE
   ANY INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED
   IN THIS PROSPECTUS IN CONNECTION WITH THE OFFERING HEREIN CONTAINED AND,
   IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED
   UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY OR THE SELLING SHAREHOLDERS
   THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION
   OF AN OFFER TO BUY, THE SECURITIES OFFERED HEREBY IN ANY JURISDICTION TO
   ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE AN OFFER OR SOLICITATION.
   NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
   SHALL, UNDER ANY CIRCUMSTANCES, CREATE AN IMPLICATION THAT THERE HAS BEEN
   NO CHANGE IN THE AFFAIRS OF THE COMPANY  SINCE THE DATE HEREOF OR THAT
   ANY INFORMATION CONTAINED HEREIN IS CORRECT AS TO ANY OF THE TIME
   SUBSEQUENT TO ITS DATE.  HOWEVER, THE COMPANY HAS UNDERTAKEN TO AMEND THE
   REGISTRATION STATEMENT OF WHICH THIS PROSPECTUS IS A PART TO REFLECT ANY
   FACTS OR EVENTS ARISING AFTER THE EFFECTIVE DATE THEREOF WHICH
   INDIVIDUALLY OR IN THE AGGREGATE REPRESENT A FUNDAMENTAL CHANGE IN THE
   INFORMATION SET FORTH IN THE REGISTRATION STATEMENT.  IT IS ANTICIPATED,
   HOWEVER, THAT MOST UPDATED INFORMATION WILL BE INCORPORATED HEREIN BY
   REFERENCE TO THE COMPANY'S REPORTS FILED UNDER THE SECURITIES EXCHANGE
   ACT OF 1934.  SEE "DOCUMENTS INCORPORATED BY REFERENCE."
   
        ALL DEALERS EFFECTING TRANSACTIONS IN THE REGISTERED SECURITIES,
   WHETHER OR NOT PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED TO
   DELIVER A PROSPECTUS.  THIS IS IN ADDITION TO THE OBLIGATION OF DEALERS
   TO DELIVER A PROSPECTUS WHEN ACTING AS UNDERWRITERS AND WITH RESPECT TO
   THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS. 
   
   <TABLE>
   <CAPTION>
                               TABLE OF CONTENTS
  <S>                                                       <C>
  Available Information                                     2
  Documents Incorporated by Reference                       2
  Summary                                                   2
  Risk Factors                                              3
  Selling Shareholders                                      7
  Plan of Distribution                                      8
  Description of Common Stock and Preferred Stock           9
  Legal Opinions                                            9
  Experts                                                   9
    /TABLE
<PAGE>
 <PAGE>
                                                 Page 16
   
                                       PART II
   
                       INFORMATION NOT REQUIRED IN PROSPECTUS
   <TABLE>
   <CAPTION>
  Item 14.  Other Expenses of Issuance and Distribution.
  -------   -------------------------------------------
  <S>                                                           <C>
  Registration Fee - Securities and Exchange Commission         $ 1,420.21
  Legal Fees and Disbursements*                                  10,000.00
  Accounting Fees and Disbursements*                              1,000.00
  Legal Fees and Expenses in Connection with Blue Sky Filings*    7,500.00
  Miscellaneous*                                                    190.00
                                                                ----------
       Total                                                    $20,110.21
                                                                ==========
  ---------------
  <FN>
  *Estimated.
  
  </TABLE>
   
   
   Item 15.  Indemnification of Directors and Officers.
   -------   -----------------------------------------
   
        The only charter provision, bylaw, contract, arrangement or statute
   under which any director, officer or controlling person of Registrant is
   insured and indemnified in any manner as such is as follows:
   
        (a)  Registrant has the power under the Colorado Corporation Code to
   indemnify any person who was or is a party or is threatened to be made a
   party to any action, whether civil, criminal, administrative or
   investigative, by reason of the fact that such person is or was a
   director, officer, employee, fiduciary, or agent of Registrant or was
   serving at its request in a similar capacity for another entity, against
   expenses (including attorneys' fees), judgments, fines and amounts paid
   in settlement actually and reasonably incurred by him in connection
   therewith if he acted in good faith and in a manner he reasonably
   believed to be in the best interest of the corporation and, with respect
   to any criminal action or proceeding, had no reasonable cause to believe
   his conduct was unlawful.  In case of an action brought by or in the
   right of Registrant such persons are similarly entitled to
   indemnification if they acted in good faith and in a manner reasonably
   believed to be in the best interests of Registrant but no indemnification
   shall be made if such person was adjudged to be liable for negligence or
   misconduct in the performance of his duty to Registrant unless and to the
   extent the court in which such action or suits was brought determines
   upon application that despite the adjudication of liability, in view of
   all circumstances of the case, such person is fairly and reasonably
   entitled to indemnification.  Such indemnification is not deemed
   exclusive of any other rights to which those indemnified may be entitled
   under the Articles of Incorporation, Bylaws, agreement, vote of
   shareholders or disinterested directors, or otherwise. 
 
        (b)  The Articles of Incorporation and Bylaws of Registrant
   generally require indemnification of officers and directors to the
   fullest extent allowed by law. 
   
      <PAGE>
<PAGE>
                                                 Page 17
   
        (c)  Paragraph 3 of the Certificate of the Selling Shareholders,
   filed as Exhibit 1.1 to this Registration Statement, contains provisions
   by which Registrant and its controlling persons are indemnified against
   certain losses, claims, expenses and liabilities under the Securities Act
   of 1933, as amended. 
   
   
   Item 16.  Exhibits.
   -------   --------
   
        The following exhibits are filed as part of this Registration
   Statement:
   <TABLE>
   <CAPTION>
  Exhibit                                                         Sequential
  Number                                                          Page Number
  ------                                                          -----------
  <S>    <C>                                                       <C>
  
   1     Form of Certificate of Selling Shareholders.              17
  
   3.1   Restated and Amended Articles of Incorporation,
         dated January 4, 1991 (incorporated herein by
         reference from the exhibits to Amendment No. 2
         to Registrant's Form S-18 Registration Statement
         No. 33-37150-D filed with the Securities and
         Exchange Commission on January 18, 1991.
  
   3.2   Articles of Amendment dated April 5, 1991 to the
         Articles of Incorporation (incorporated herein by
         reference from the exhibits to Registrant's report
         filed on Form 8-K dated August 10, 1993).
  
   3.3   Bylaws as amended, (incorporated herein by reference
         from the exhibits to Registrant's Form S-18
         Registration Statement No. 33-37150-D filed with the
         Securities and Exchange Commission on January 18,
         1991).

   4     Form of Warrant to Purchase Shares of Common Stock.       18
  
   5     Opinion of Brega & Winters, P.C.                          25
  
   23.1  Consent of Independent Certified Public Accountants       26
  
   23.2  Consent of Brega & Winters P.C. (included in
         Exhibit 5.1).

   99    Report of Independent Certified Public Accountants        20
         (incorporated herein by reference from the exhibits
         to Registrant's Amendment No. One to Annual Report
         on Form 10-KSB/A filed with the Securities and
         Exchange Commission on September 6, 1996.)
  </TABLE>
   Item 17.  Undertakings.
   -------   ------------
   I.     The undersigned Registrant hereby undertakes:  
   
             (1)  To file, during any period in which offers or sales are
   being made, a post-effective amendment to this Registration Statement:
  <PAGE>
<PAGE>
                                                Page 18
   
                  (i)  to include any prospectus required by Section
   10(a)(3) of the Securities Act of 1933; 
  
                 (ii)  to reflect in the prospectus any facts or events
   arising after the effective date of the Registration Statement (or the
   most recent post-effective amendment thereof) which, individually or in
   the aggregate, represent a fundamental change in the information set
   forth in the Registration Statement; 
   
                (iii)  to include any material information with respect to
   the plan of distribution not previously disclosed in the Registration
   Statement or any material change to such information in the Registration
   Statement;
   
             (2)  That, for the purpose of determining any liability under
   the Securities Act of 1933, each such post-effective amendment shall be
   deemed to be a new registration statement relating to the securities
   offered therein, and the offering of such securities at that time shall
   be deemed to be the initial bona fide offering thereof; and 
   
             (3)  To remove from registration by means of a post-effective
   amendment any of the securities being registered which remain unsold at
   the termination of the offering.
   
        (a)  The undersigned registrant hereby undertakes that, for purposes
   of determining any liability under the Securities Act of 1933, each
   filing of the registrant's annual report pursuant to Section 13(a) or
   Section 15(d) of the Securities Exchange Act of 1934 (and, where
   applicable, each filing of an employee benefit plan's annual report
   pursuant to Section 15(d) of the Securities Exchange Act of 1934) that
   is incorporated by reference in the registration statement shall be
   deemed to be a new registration statement relating to the securities
   offered therein, and the offering of such securities at that time shall
   be deemed to be the initial bona fide offering thereof.
   
        (b)  Insofar as indemnification for liabilities arising under the
   Securities Act of 1933 may be permitted to directors, officers and
   controlling persons of the Registrant pursuant to the foregoing
   provisions, or otherwise, the Registrant has been advised that in the
   opinion of the Securities and Exchange Commission such indemnification
   is against public policy as expressed in the Act and is, therefore,
   unenforceable.  In the event that a claim for indemnification against
   such liabilities (other than the payment by the Registrant of expenses
   incurred or paid by a director, officer or controlling person of the
   Registrant in the successful defense of any action, suit or proceeding)
   is asserted by a director, officer or controlling person in connection
   with the securities being registered, the Registrant will, unless in the
   opinion of its counsel the matter has been settled by controlling
   precedent, submit to a court of appropriate jurisdiction the question of
   whether such indemnification by it is against public policy as expressed
    in the Act and shall be governed by the final adjudication of such issue.
<PAGE>
<PAGE>
                                                 Page 19
   
                                    SIGNATURES
        Pursuant to the requirements of the Securities Act of 1933, the
   Registrant certifies that it has reasonable grounds to believe it meets
   all of the requirements for filing on Form S-3 and has duly caused this
   Registration Statement to be signed on its behalf by the undersigned,
   thereunto duly authorized, in the City of Denver, State of Colorado, on
   the        day of                          1996.
   
                                 RENTECH, INC.
   
                             By: (Signature)
                                 -----------------------------------
                                 Dennis L. Yakobson, President
   
                            GENERAL POWER OF ATTORNEY
 
        KNOW ALL MEN BY THESE PRESENTS, each person whose signature appears
   below, hereby authorizes, constitutes and appoints Dennis L. Yakobson and
   Ronald C. Butz and each of them, his true and lawful attorney-in-fact and
   agents with full power of substitution and resubstitution, for him and in
   his name, place and stead, in any and all capacities, to sign this
   Registration Statement for the registration under the Securities Act of
   1933, as amended, of securities of Rentech, Inc. and any and all pre-
   effective and post-effective amendments to this Registration Statement,
   together with any and all exhibits thereto and other documents required
   to be filed with respect hereto and thereto and to file the same with the
   Securities and Exchange Commission and any other regulatory authority,
   granting unto said attorneys-in-fact and agents and each of them, full
   power and authority to do and perform each and every act and thing
   requisite or necessary to be done in and about the premises, as fully to
   all intents and purposes as he might or could do in person, hereby
   ratifying and confirming all that said attorneys-in-fact and agents or
   each of them, or their or his substitute or substitutes, may lawfully do
   or cause to be done by virtue hereof and incorporate such changes as any
   of the said attorneys-in-fact deems appropriate.
   
       Pursuant to the requirements of the Securities Act of 1933, this
   Registration Statement has been signed by the following persons in the
   capacities and on the dates indicated.
   (Signature)                                          September 5
   ------------------  President; Chief Executive       -------------, 1996
   Dennis L. Yakobson  Officer; and Director
   (Signature)                                          September 5
   ------------------  Vice President-Research and      -------------, 1996
   Charles B. Benham   Development; and Director
   (Signature)                                          September 5  
   ------------------  Vice President, Treasurer; and   -------------, 1996
   Mark S. Bohn        Director
   (Signature)                                          September 5  
   ------------------  Vice President, Chief Operating  -------------, 1996
   Ronald C. Butz      Officer, Secretary and Director
   (Signature)                                          September 5  
   ------------------  Director                         -------------, 1996
   D. Barry McKennitt
   (Signature)                                          September 5  
   ------------------  Director                         -------------, 1996
   Erich W. Tiepel
   (Signature)                                          September 5  
   ------------------  Vice President-Finance, and      -------------, 1996
    James P. Samuels    Chief Financial Officer<PAGE>
<PAGE>
                                                 Page 20
   
                                  EXHIBIT INDEX
   <TABLE>
   <CAPTION>
  Exhibit                                                       Sequential
  No.   Document                                                Page Number
  <S>   <C>                                                     <C>
   1    Form of Certificate of Selling Shareholders.            17
  
   3.1  Restated and Amended Articles of Incorporation,
        dated January 4, 1991 (incorporated herein by
        reference from the exhibits to Amendment No. 2
        to Registrant's Form S-18 Registration Statement
        No. 33-37150-D filed with the Securities and
        Exchange Commission on January 18, 1991.
  
   3.2  Articles of Amendment dated April 5, 1991 to the
        Articles of Incorporation (incorporated herein by
        reference from the exhibits to Registrant's report
        filed on Form 8-K dated August 10, 1993).
  
   3.3  Bylaws as amended, (incorporated herein by
        reference from the exhibits to Registrant's Form
        S-18 Registration Statement No. 33-37150-D filed
        with the Securities and Exchange Commission on
        January 18, 1991).
  
   4    Form of Warrant to Purchase Shares of Common Stock.     18
  
   5    Opinion of Brega & Winters P.C.                         25
  
   23.1 Consent of Independent Certified Public Accountants     26
  
   23.2 Consent of Brega & Winters, P.C.
         (included in Exhibit 5.1).

   99    Report of Independent Certified Public Accountants     20
         (incorporated herein by reference from the exhibits
         to Registrant's Amendment No. One to Annual Report
         on Form 10-KSB/A filed with the Securities and
         Exchange Commission on September 6, 1996.)
</TABLE>
   
   
                                     APPENDIX
   
   On the Prospectus cover there is a red herring running vertically on the
   left-hand side of the page.  It reads as follows:
   
   Information contained herein is subject to completion or amendment.  A
   registration statement relating to these securities has been filed with
   the Securities and Exchange Commission.  These securities may not be sold
   nor may offers to buy be accepted prior to the time the registration
   statement becomes effective.  This prospectus shall not constitute an
   offer to sell or the solicitation of an offer to buyer nor shall there be
   any sale of these securities in any state in which such offer, solici-
   tation or sale would be unlawful prior to registration or qualification
   under the securities laws of any such state. 

       <PAGE>
                                                  Page 21
                                                  EXHIBIT 1
                        CERTIFICATE OF SELLING SHAREHOLDER
        The undersigned selling shareholder ("Holder") has requested that
   RENTECH, INC. (the "Company"), include in a Registration Statement on
   Form S-3 certain shares of the Company's common stock (the "Securities")
   desired to be sold by the Holder.  To induce the Company to register such
   Securities for public sale by the Holder:
   
        1.  The Holder represents and warrants to and covenants with the
   Company that:  (i) the Holder has fully and accurately completed the
   Registration Statement Questionnaire for use by the Company in
   preparation of the Registration Statement and the answers and information
   contained therein are true and correct as of the date hereof and will be
   true and correct as of the effective date of the Registration Statement
   and at all times thereafter; (ii) the Holder understands that a current
   prospectus is required to be delivered to any purchaser of the
   Securities; (iii) the Holder has not entered into any agreement, written
   or oral, for the sale of any of the Securities upon terms different from
   those set forth in the Registration Statement; (iv) the Holder is aware
   of and agrees to abide by the provisions of Rule 10b-6 under the
   Securities Exchange Act of 1934 ("1934 Act"), which provides, in essence,
   that the Holder, under certain circumstances, may not bid for or purchase
   any of the Securities covered by the Registration Statement or any
   security of the same class, or any right to purchase any such security,
   and may not attempt to induce any person to purchase any such security or
   right until all Securities covered by such Registration Statement and
   owned by such Holder shall have been sold or withdrawn; and (v) the
   Holder is aware of and agrees to abide by the provisions of Rule 10b-7
   under the 1934 Act which provides that any person who offers to buy or
   buys the common stock of the Company for the purpose of maintaining or
   stabilizing the market price of such common stock to facilitate the sale
   of the Securities may be deemed to have violated rules prohibiting
   manipulation of market prices for securities.
  
        2.  The Holder agrees to promptly give notice to the Company in the
   event any of the information provided by the Holder in the Registration
   Statement Questionnaire or any of the information relating to the
   Securities owned by the Holder included in the Registration Statement,
   or to the plan of distribution as set forth in the Registration Statement
   (copies of which are enclosed), should become materially false or
   misleading.  The Holder acknowledges and agrees that there may
   occasionally be times when the Company must temporarily suspend the use
   of the prospectus and that the Holder will not be able to sell any of the
   Securities during the suspension period.
   
        3.  To the extent permitted by law, the Holder will indemnify and
   hold harmless the Company and its officers, directors and any person who
   controls the Company within the meaning of the Securities Act of 1933, as
   amended, for any claims, damages or liabilities (and actions related
   thereto) arising out of any untrue or alleged untrue statement of any
   material fact or based upon the omission or alleged omission to state a
   material fact required to be stated in the Registration Statement,
   prospectus or amendments or to make statements therein not misleading,
   but only to the extent that such untrue or alleged untrue statement or
   omission or alleged omission was made in reliance upon and in conformity
   with written information furnished by Holder for use in connection with
   such registration. 
   
        Dated this         day of                           , 1996.
                   -------        --------------------------
   
   ------------------------------      ------------------------------
   Signature                           Signature (if held jointly)
   
   ------------------------------      ------------------------------
   Print or Type Name                  Print or Type Name

         <PAGE>
                                                 Page 22
                                                          EXHIBIT 4
   THE SECURITIES REPRESENTED BY THIS CERTIFICATE, AND THE SECURITIES ISSUED
   UPON EXERCISE HEREOF, MAY NOT BE OFFERED FOR SALE, SOLD OR OTHERWISE
   TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT FILED
   UNDER THE SECURITIES ACT OF 1933 (THE "ACT"), OR PURSUANT TO AN EXEMPTION
   FROM REGISTRATION UNDER THE ACT WHICH SHALL BE ESTABLISHED TO THE
   SATISFACTION OF THE COMPANY.
 
             Void after 3:30 P.M., Denver Time, on                  , 199
                                                    ---------------      --
 
                                             Warrant to Purchase
                                                          Shares
                                             ------------
                                                 of Common Stock
 
 
                   WARRANT TO PURCHASE SHARES OF COMMON STOCK
 
                                       OF
 
                                  RENTECH, INC.
 
   This Is to Certify That, FOR VALUE RECEIVED,
                                                --------------------------
   -------------------------------------------------------------------------
   or registered assigns ("Holder"), is entitled to purchase, subject to the
   provisions of this Warrant, from RENTECH, INC., a Colorado corporation
   ("Company"), at any time not later than 3:30 P.M., Denver time, on
                             , 199   , one year after the date of this
   --------------------------     ---
   Warrant, (the "Expiration Date")                             shares of
   common stock, having $.01 par value per share, of the Company ("Common
   Stock") at an exercise price, subject to adjustment as set forth below,
   of $0.25 per share.  The number of shares of Common Stock to be received
   upon the exercise of this Warrant and the price to be paid for a share of
   Common Stock are subject to adjustment from time to time as hereinafter
   set forth. The shares of the Common Stock deliverable upon such exercise,
   and as adjusted from time to time, are hereinafter sometimes referred to
   as "Warrant Stock" and the exercise price of a share of Common Stock in
   effect at any time and as adjusted from time to time is hereinafter
   sometimes referred to as the "Exercise Price." 
 
      (a)  Exercise of Warrant.  Subject to the provisions of Section (p)
   hereof, this Warrant may be exercised in whole or in part at any time or
   from time to time not later than 3:30 P.M., Denver Time, on
                        , 199   , or if that date falls on a day on which
   -------------------- banking institutions are authorized by law to close,
   then on the next succeeding day which shall not be such a day, by
   presentation and surrender hereof to the Company with the Purchase Form
   annexed hereto duly executed and accompanied by payment of the Exercise
   Price for the number of shares specified in such form, together with all
   federal and state taxes applicable upon such exercise. If this Warrant
   should be exercised in part only, the Company shall, upon surrender of
   this Warrant for cancellation, execute and deliver a new Warrant evi-
   dencing the right of the Holder to purchase the balance of the shares
   purchasable hereunder.  Upon receipt by the Company of this Warrant at
   the office or agency of the Company, in proper form for exercise, the
   Holder shall be deemed to be the holder of record of the shares of Common
   <PAGE>
                                               Page 23
 
   Stock issuable upon such exercise, notwithstanding that the stock trans
   fer books of the Company shall then be closed or that certificates repre-
   senting such securities shall not then be actually delivered to the
   Holder.  The Exercise Price shall be paid in cash.
 
        (b)  Reservation of Shares.  The Company hereby agrees that at all
   times there shall be reserved for issuance and/or delivery upon exercise
   of this Warrant such number of shares of its Common Stock as shall be
   required for issuance or delivery upon exercise of this Warrant.  
 
        (c)  Fractional Shares.  No fractional shares or scrip representing
   fractional shares shall be issued upon the exercise of this Warrant.
   With respect to any fraction of a share called for upon any exercise
   hereof, the Company shall pay to the Holder an amount in cash equal to
   such fraction multiplied by the current market value of such fractional
   share, determined as follows:  
 
             (1)  If the Common Stock is listed on a national securities
   exchange or admitted to unlisted trading privileges on such exchange, the
   current value shall be the last reported sale price of the Common Stock
   on the composite tape of such exchange on the last trading day prior to
   the date of exercise of this Warrant or if no such sale is made on such
   day, the average closing bid and asked prices for such day on the
   composite tape of such exchange; or 
 
             (2)  If the Common Stock is not so listed or admitted to
   unlisted trading privileges, the current value shall be the mean of the
   last reported bid and asked prices reported by the National Association
   of Securities Dealers Quotation System (or, if not so quoted on NASDAQ,
   by the National Quotation Bureau, Inc.) on the last trading day prior to
   the date of the exercise of this Warrant; or 
 
             (3)  If the Common Stock is not so listed or admitted to
   unlisted trading privileges and bid and asked prices are not so reported,
   the current value shall be an amount, not less than book value, deter
   mined in such reasonable manner as may be prescribed by the Board of
   Directors of the Company, such determination to be final and binding on
   the Holder. 
 
        (d)  Exchange, Assignment or Loss of Warrant.  This Warrant is
   assignable and exchangeable, without expense, at the option of the
   Holder, upon presentation and surrender hereof to the Company or at the
   office of its stock transfer agent, if any, for other Warrants of differ-
   ent denominations entitling the holder thereof to purchase in the aggre-
   gate the same number of shares of Common Stock purchasable hereunder.
   Any such assignment shall be made by surrender of this Warrant to the
   Company or at the office of its stock transfer agent, if any, with the
   Assignment Form annexed hereto duly executed and funds sufficient to pay
   any transfer tax; whereupon the Company shall, without charge, execute
   and deliver a new Warrant in the name of the assignee named in such
   instrument of assignment and this Warrant promptly shall be canceled.
   This Warrant may be divided or combined with other Warrants which carry
   the same rights upon presentation hereof at the office of the Company or
   at the office of its stock transfer agent, if any, together with a
   written notice specifying the names and denominations in which new
   Warrants are to be issued and signed by the Holder hereof.  The term
   "Warrant" as used herein includes any Warrants issued in substitution for
   or replacement of this Warrant, or into which this Warrant may be divided
   or exchanged.  Upon receipt by the Company of evidence satisfactory to it
   of the loss, theft, destruction or mutilation of this Warrant, and (in
   the case of loss, theft or destruction) of reasonably satisfactory
    indemnification including a surety bond, and upon surrender and cancella-
<PAGE>
  <PAGE>
                                               Page 24
   tion of this Warrant, if mutilated, the Company will execute and deliver
   a new Warrant of like tenor and date.  Any such new Warrant executed and
   delivered shall constitute an additional contractual obligation on the
   part of the Company, whether or not this Warrant so lost, stolen,
   destroyed, or mutilated shall be at any time enforceable by anyone.
 
        (e)  Rights of the Holder.  The Holder shall not, by virtue hereof,
   be entitled to any rights of a shareholder of the Company, either at law
   or equity, and the rights of the Holder are limited to those expressed in
   this Warrant and are not enforceable against the Company except to the
   extent set forth herein.
 
        (f)  Officer's Certificate.  Upon request by the Holder, and if the
   Exercise Price is adjusted as required by the provisions of Section (f)
   hereof, the Company shall forthwith file in the custody of its Secretary
   or an Assistant Secretary at its principal office, and with its stock
   transfer agent, if any, an officer's certificate showing the adjusted
   Exercise Price determined as herein provided and setting forth in
   reasonable detail the facts requiring such adjustment and the calculation
   thereof.  Each such officer's certificate shall be made available at all
   reasonable times for inspection by the Holder and the Company shall, upon
   request after each such adjustment, mail a copy of such certificate to
   the Holder. 
 
        (g)  Notices to Holders.  So long as this Warrant shall be
   outstanding and unexercised (i) if the Company shall pay any dividend or
   make any distribution upon the Common Stock, or (ii) if the Company shall
   offer to all holders of Common Stock for subscription or purchase by them
   any shares of stock of any class or any other rights, or (iii) if any
   capital reorganization of the Company, reclassification of the capital
   stock of the Company, consolidation or merger of the Company with or into
   another corporation, sale, lease or transfer of all or substantially all
   of the property and assets of the Company to another corporation, or
   voluntary or involuntary dissolution, liquidation or winding up of the
   Company shall be effected, then, in any such case, the Company shall
   cause to be delivered to the Holder, at least 30 days prior to the date
   specified in (x) or (y) below, as the case may be, a notice containing a
   brief description of the proposed action and stating the date on which
   (x) a record is to be taken for the purpose of such dividend, distri-
   bution or rights, or (y) such reclassification, reorganization, consoli-
   dation, merger, conveyance, lease, dissolution, liquidation or winding up
   is to take place and the date, if any, is to be fixed, as of which the
   holders of Common Stock of record shall be entitled to exchange their
   shares of Common Stock for securities or other property deliverable upon
   such reclassification, reorganization, consolidation, merger, conveyance,
   dissolution, liquidation or winding up. 
 
        (h)  Dissolution.  If, at any time prior to the expiration of this
   Warrant and prior to the exercise thereof, any dissolution, liquidation
   or winding up of the Company shall be proposed, the Company shall cause
   at least 30 days' notice to be mailed by certified mail to the registered
   Holder of this Warrant Certificate at his address as it appears on the
   books of the Company.  Such notice shall specify the date as of which
   holders of record of Common Stock shall participate in any distribution
   or shall be entitled to exchange their Common Stock for securities or
   other property, deliverable upon such dissolution, liquidation or winding
   up, as the case may be; to the end that, during such period of 30 days,
   the holders of this Warrant may exercise this Warrant and purchase Common
   Stock (or other stock substituted therefor as hereinbefore provided) and
   be entitled in respect of shares so purchased to all of the rights of the
   other holders of Common Stock of the Company.  In case of a dissolution,
   liquidation or winding up of the Company, all purchase rights under this
   Warrant shall terminate at the close of business on the date as of which
   <PAGE>
                                               Page 25
   holders of record of the Common Stock shall be entitled to participate in
   a distribution of the assets of the Company in connection with such
   dissolution, liquidation or winding up (provided that in no event shall
   said date be less than 30 days after completion of service by certified
   mail of notice as aforesaid).  Any Warrant not exercised prior to such
   time shall be void and no rights shall exist thereunder.  In any such
   case of termination of purchase rights, a statement thereof shall be
   included in the notice provided for herein. 
 
        (i)  Spin-Offs.  In the event the Company spins-off a subsidiary or
   stock held in another corporation as an investment by distributing to the
   shareholders of the Company, as a dividend or otherwise, the stock of the
   subsidiary or other corporation, the Company shall reserve, for the life
   of the Warrant, shares of the subsidiary or other corporation to be
   delivered to the holders of the Warrants upon exercise to the same extent
   as if they were owners of record of the Warrant Stock on the record date
   for payment of the shares of the subsidiary or other corporation.  
 
        (j)  Registration Rights.
 
             (1)  Automatic Registration Rights.  If the Company files a
   registration statement with the Securities and Exchange Commission for
   the Common Stock acquired by the holders of its Nonsubordinated 10%
   Convertible Promissory Notes ("Notes") through exercise of the Notes,
   under conditions provided by the terms of the Notes, the Company shall
   include in the registration statement, and one time only, use its best
   efforts to cause to be registered under the Securities Act of 1933, as
   amended, all of the Common Stock of such holders that they have acquired
   by exercise of their warrants.  The Company will include in the
   registration process only such shares of Common Stock as have been
   acquired by exercise of the Warrants no later than twenty (20) days after
   mailing the Company's notice of its intent to file a registration
   statement to the holders of the Notes.  The Company will file only one
   registration statement for holders of Common Stock acquired upon
   conversion of the Notes and exercise of the Warrants. 
 
             (2)  Piggy-Back Registration.  Subject to Section (k)(7)(D)
   below, if at any time the Company proposes to register any of its Common
   Stock under the Act in connection with the public offering of such
   securities solely for cash on a form that would also permit the
   registration of the Common Stock of the holders that they acquire through
   conversion of the Notes and warrants, the Company shall, each such time,
   promptly give each Holder written notice of such determination.  Upon the
   written request of any Holder given within twenty (20) days after mailing
   of any such notice by the Company, the Company shall use its best efforts
   to cause to be registered under the Act all of such Common Stock so
   acquired that each such Holder has requested to be registered.
 
             (3)  Obligations of the Company.  Whenever required to use its
   best efforts to effect the registration of any Common Stock, the Company
   shall, as expeditiously as reasonably possible:
 
                    (A)  Prepare and file with the Securities and Exchange
   Commission ("SEC") a registration statement with respect to such Warrant
   Stock and use its best efforts to cause such registration statement to
   become and remain effective; provided, however, that in connection with
   any proposed registration intended to permit an offering of any
   securities from time to time (i.e., a so-called "shelf registration"),
   the Company shall in no event be obligated to cause any such registration
   to remain effective for more than one year. 
 
 
 
   <PAGE>
                                               Page 26
                  (B)  Prepare and file with the SEC such amendments and
   supplements to such registration statement and the prospectus used in
   connection with such registration statement as may be necessary to comply
   with the provisions of the Act with respect to the disposition of all
   securities covered by such registration statement. 
 
                  (C)  Furnish to the Holders such numbers of copies of a
   prospectus, including a preliminary prospectus, in conformity with the
   requirements of the Act, and such other documents as they may reasonably
   request in order to facilitate the disposition of Warrant Stock owned by
   them. 
 
                  (D)  Use its best efforts to register and qualify the
   securities covered by such registration statement under such other
   securities or blue-sky laws of such jurisdictions as shall be reasonably
   appropriate for the distribution of the securities covered by the
   registration statement, provided that the Company shall not be required
   in connection therewith or as a condition thereto to qualify to do
   business or to file a general consent to service of process in any such
   states or jurisdictions, and further provided that (anything in this
   Section (k) to the contrary notwithstanding with respect to the bearing
   of expenses) if any jurisdiction in which the securities shall be
   qualified shall require that expenses incurred in connection with the
   qualification of the securities in that jurisdiction be borne by selling
   shareholders pro rata, to the extent required by such jurisdiction.
 
             (4)  Furnish Information.  It shall be a condition precedent to
   the obligations of the Company to take any action that the Holders shall
   furnish to the Company such information regarding them, the Warrant Stock
   held by them, and the intended method of disposition of such securities
   as the Company shall reasonably request and as shall be required in
   connection with the action to be taken by the Company.
 
             (5)  Company Registration Expenses.  In the case of any
   registration effected pursuant to Section (k)(1), the Company shall bear
   any additional registration and qualification fees and expenses
   (excluding underwriters' discounts, commissions and expenses), and any
   additional costs and disbursements of counsel for the Company that result
   from the inclusion of securities held by the Holders in such
   registration; provided, however, that if any such cost or expense is
   attributable solely to one selling Holder and does not constitute a
   normal cost or expense of such a registration, such cost or expense shall
   be paid by that selling Holder.  In addition, each selling Holder shall
   bear the fees and costs of its own counsel.
 
             (6)  Delay of Registration.  No Holder shall have any right to
   take any action to restrain, enjoin, or otherwise delay any registration
   as the result of any controversy that might arise with respect to the
   interpretation or implementation of this Section (l).
 
             (7)  Indemnification.  In the event any Common Stock is
   included in a registration statement:
  
                  (A)  To the extent permitted by law, the Company will
   indemnify and hold harmless each Holder requesting or joining in a
   registration, any underwriter (as defined in the Act) for it, and each
   such person, if any, who controls such Holder or underwriter within the
   meaning of the Act, against any losses, claims, damages, or liabilities,
   joint or several, to which they may become subject under the Act or
   otherwise, insofar as such losses, claims, damages, or liabilities (or
   actions in respect thereof) arise out of or are based on any untrue or
   alleged untrue statement of any material fact contained in such
   registration statement, including any preliminary prospectus or final
   <PAGE>
                                               Page 27
   prospectus contained therein or any amendments or supplements thereto, or
   arise out of or are based upon the omission or alleged omission to state
   therein a material fact required to be stated therein, or necessary to
   make the statements therein not misleading; and will reimburse each such
   Holder, such underwriter, or controlling person for any legal or other
   expenses reasonably incurred by them in connection with investigating or
   defending any such loss, claim, damage, liability, or action; provided,
   however, that the indemnity agreement contained in this Section (k)(6)(A)
   shall not apply to amounts paid in settlement of any such loss, claim,
   damage, liability, or action if such settlement is effected without the
   consent of the Company (which consent shall not be unreasonably withheld)
   nor shall the Company be liable in any such case for any such loss,
   claim, damage, liability, or action to the extent that it arises out of
   or is based upon an untrue statement or alleged untrue statement or
   omission or alleged omission made in connection with such registration
   statement, preliminary prospectus, final prospectus, or amendments or
   supplements thereto, in reliance upon and in conformity with written
   information furnished expressly for use in connection with such
   registration by any such Holder, underwriter, or controlling person.
 
                  (B)  To the extent permitted by law, each Holder
   requesting or joining in a registration will indemnify and hold harmless
   the Company, each of its directors, each of its officers who have signed
   the registration statement, each person, if any, who controls the Company
   within the meaning of the Act, and each agent and any underwriter for the
   Company (within the meaning of the Act) against any losses, claims,
   damages, or liabilities to which the Company or any such director,
   officer, controlling person, agent, or underwriter may become subject,
   under the Act or otherwise, insofar as such losses, claims, damages, or
   liabilities (or actions in respect thereto) arise out of or are based
   upon any untrue statement or alleged untrue statement of any material
   fact contained in such registration statement, including any preliminary
   prospectus or final prospectus contained therein or any amendments or
   supplements thereto, or arise out of or are based upon the omission or
   alleged omission to state therein a material fact required to be stated
   therein or necessary to make the statements therein not misleading, in
   each case to the extent, but only to the extent, that such untrue
   statement or alleged untrue statement or omission or alleged omission was
   made in such registration statement, preliminary or final prospectus, or
   amendments or supplements thereto, in reliance upon and in conformity
   with written information furnished by such Holder expressly for use in
   connection with such registration; and each such Holder will reimburse
   any legal or other expenses reasonably incurred by the Company or any
   such director, officer, controlling person, agent, or underwriter in
   connection with investigating or defending any such loss, claim, damage,
   liability, or action; provided, however, that the indemnity agreement
   contained in this Section(l)(6)(B) shall not apply to amounts paid in
   settlement of any such loss, claim, damage, liability, or action if such
   settlement is effected without the consent of such Holder (which consent
   shall not be unreasonably withheld). 
 
                  (C)  Promptly after receipt by an indemnified party under
   this Section (k)(7) of notice of the commencement of any action, such
   indemnified party will, if a claim in respect thereof is to be made
   against any indemnifying party under this paragraph, notify the
   indemnifying party in writing of the commencement thereof and the
   indemnifying party shall have the right to participate in, and, to the
   extent the indemnifying party so desires, jointly with any other
   indemnifying party similarly noticed, to assume the defense thereof with
   counsel mutually satisfactory to the parties.  The failure to notify an
   indemnifying party promptly of the commencement of any such action, if
   prejudicial to his ability to defend such action, shall relieve such
   indemnifying party of any liability to the indemnified party under this
   <PAGE>
                                               Page 28
   paragraph, but the omission to so notify the indemnifying party will not
   relieve him of any liability that he may have to any indemnified party
   otherwise than under this paragraph.
 
                  (D)  Underwriting Requirements.  In connection with any
   offering involving an underwriting of shares of Common Stock being issued
   by the Company or being sold by persons other than the Holders exercising
   piggy-back registration rights (the "Initial Sellers"), the Company shall
   not be required under Section (k)(2) to include any of the Holders'
   Common Stock acquired by exercise of the Notes and warrants in such
   underwriting unless they accept the terms of the underwriting as agreed
   upon between the Company or the Initial Sellers and the underwriters
   selected by it or them, and then only in such quantity as will not, in
   the written opinion of the underwriters, jeopardize the success of the
   offering by the Company or by the Initial Sellers.  If the total amount
   of securities that all Holders request to be included in such offering
   exceeds the amount of securities that the underwriters reasonably believe
   compatible with the success of the offering, the Company shall only be
   required to include in the offering so many of the securities of the
   selling Holders as the underwriters believe will not jeopardize the
   success of the offering (the securities so included to be apportioned pro
   rata among the selling Holders according to the total amount of
   securities owned by said selling Holders, or in such other proportions as
   shall mutually be agreed to by such selling Holders), provided that no
   such reduction shall be made with respect to any securities offered by
   the Company or the Initial Sellers for its or their own account.
 
             (8)  Termination of the Company's Obligations.  The Company
   shall have no obligations pursuant to this Section (k) more than one (1)
   year after the date of this Agreement.
 
             (9)  Lockup Agreement.  In consideration for the Company
   agreeing to its obligations under this Section(l), each Holder agrees in
   connection with any registration of the Company's securities that, upon
   the request of the Company or the underwriters managing any underwritten
   offering of the Company's securities, not to sell, make any short sale
   of, loan, grant any option for the purchase of, or otherwise dispose of
   any Warrant Stock (other than those included in the registration) without
   the prior written consent of the Company or such underwriters, as the
   case may be, for such period of time (not to exceed 90 days from the
   effective date of such registration) as the Company or the underwriters
   may specify.
 
             (10)  Notice.  Any notices or certificates by the Company to
   the Holder and by the Holder to the Company shall be deemed delivered if
   in writing and delivered personally (including by telex, telecopier,
   telegram or other acknowledged receipt) or three business days following
   deposit in the United States mails, sent by registered or certified mail,
   return receipt requested, addressed as follows:
 
        Holder:
                         ------------------------------
                         ------------------------------
                         ------------------------------
 
        Company:         Rentech, Inc.
                         1331 17th Street, Suite 720
                         Denver, Colorado 80202
                         Attention:  President
 
   Any person may change the address for the giving of notice by notice duly
   given effective five (5) business days thereafter.
 
   <PAGE>
                                               Page 29
        (k)  Amendments and Waivers.  Any term, condition or provision of
   this Warrant may be amended and the observance thereof may be waived
   (either generally or in a particular instance and either retroactively or
   prospectively), with the written consent of the Company and the Holders.
 
        (l)  Entire Agreement.  This Warrant constitutes the entire
   agreement among the parties thereto and supersedes any and all prior
   agreements whether written or oral regarding the subject matter hereof.
 
        (m)  Transfer to Comply with the Securities Act of 1933.
 
             (1)  This Warrant or the Warrant Stock or any other security
   issued or issuable upon exercise of this Warrant may not be offered or
   sold except in conformity with the Securities Act of 1933, as amended,
   and then only against receipt of an agreement of such person to whom such
   offer of sale is made to comply with the provisions of this Section (p)
   with respect to any resale or other disposition of such securities.
 
             (2)  The Company may cause the following legend to be set forth
   on each certificate representing Warrant Stock or any other security
   issued or issuable upon exercise of this Warrant not theretofore
   distributed to the public or sold to underwriters for distribution to the
   public pursuant to Section (l) hereof, unless counsel for the Company is
   of the opinion as to any such certificate that such legend is
   unnecessary:
 
             The securities represented by this certificate may not be
             offered for sale, sold or otherwise transferred except pursuant
             to an effective registration statement made under the
             Securities Act of 1933 (the "Act"), or pursuant to an exemption
             from registration under the Act the availability of which is to
             be established to the satisfaction of the Company.
 
        (n)  Applicable Law.  This Warrant shall be governed by, and
   construed in accordance with, the laws of the state of Colorado.
 
 ATTEST:                            RENTECH, INC.
 
 
 -------------------------      By: 
 Ronald C. Butz, Secretary          -----------------------------------
 Ronald C. Butz, Secretary          Dennis E. Yakobson, President
 
 [SEAL]                         Date:
                                      ---------------------------------
  <PAGE>

        <PAGE>
                                                 Page 30
   
   
                                               EXHIBIT 5
   
                       Brega & Winters P.C.  Attorneys at Law
               One Norwest Center, 1700 Lincoln Street, Suite 2222
                             Denver, Colorado 80202
                                  (303) 866-9400
                               FAX:  (303) 861-9109
   
   
                                     September 6, 1996
   
   
   
   Rentech, Inc.
   1331 17th Street, Suite 720
   Denver, Colorado 80202
   
        Re:  Registration Statement on Form S-3
   
   Gentlemen:
   
        This firm has represented Rentech, Inc., a Colorado corporation (the
   "Company") in connection with its proposed offering by selling
   shareholders of approximately 10,045,396 Shares of Common Stock, $.01 par
   value (the "Shares"), pursuant to a Registration Statement on Form S-3. 
   In connection with such representation, we have reviewed the Company's
   articles of incorporation, bylaws, minute books and the applicable laws
   of the State of Colorado.  
   
        Based on such review, we are of the opinion that the shares issued
   to the selling shareholders identified in the registration statement are
   fully paid and non-assessable.
   
        We hereby consent to the reference to our firm under the heading
   "LEGAL OPINIONS" in the Registration Statement on Form S-3 and the
   related Prospectus and to the filing of this opinion with the Securities
   and Exchange Commission as an exhibit to the Registration Statement.
   
                                   Very truly yours,
   
                                   (Signature)
   
                                   BREGA & WINTERS P.C.

       <PAGE>
                                                 Page 31
   
                                                  EXHIBIT 23.1
   
   
   
            CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
   
   
   
   
   Rentech, Inc.
   1331 17th Street, Suite 720
   Denver, CO 80202
   
   We consent to the incorporation by reference in the Registration
   Statement of Rentech, Inc. on Form S-3 of our report dated September
   5, 1996 relating to the consolidated Financial Statements appearing in
   the Annual Report on Form 10-KSB of Rentech, Inc. for the years ended
   December 31, 1995 and 1994, and to the reference to us under the
   heading "Experts" in the Prospectus, which is part of such Registration
   Statement. 
   
   (Signature)  
   
   BDO Seidman, LLP
 
 
   September 5, 1996
   -----------------
   Denver, Colorado


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