Exhibit 10.9.10
							---------------

                                 COMMERCIAL GUARANTY
     =========================================================================  
              LOAN  LOAN
   PRINCIPAL  DATE  MATURITY  NO.  CALL COLLATERAL   ACCOUNT OFFICER INITIALS
  ---------   ----  --------  ---  ---- ----------  -------  ------- ------
                                          BL,RE     0224851  NVB
   ===========================================================================
       References in the shaded area are for Lender's use only and do not limit
              the applicability of this document to any particular loan
                                       or item.
   ===========================================================================

     BORROWER:  CHEMPOWER, INC.              LENDER: FIRST NATIONAL BANK OF OHIO
                807 E. TURKEYFOOT LAKE ROAD          COMMERCIAL LOAN DEPARTMENT
                AKRON, OHIO 44319                    106 S. MAIN STREET
                                                     AKRON, OHIO 44308

     GUARANTOR: AMERICAN ECO CORPORATION
                11011 JONES ROAD
                HOUSTON, TX 77070
     ===========================================================================

     AMOUNT OF GUARANTY. The amount of this Guaranty is Unlimited.

     CONTINUING  UNLIMITED   GUARANTY.  For  good  and  valuable  consideration,
     American Eco Corporation   ("Guarantor")  absolutely   and  unconditionally
     guarantees and promises to pay to First National Bank of Ohio ("Lender") or
     its order, on demand, in legal tender of  the United States of America, the
     Indebtedness  (as   that  term  is   defined  below)  of   Chempower,  Inc.
     ("Borrower") to  Lender  on the  terms  and conditions  set  forth in  this
     Guaranty.  Under this Guaranty, the liability of Guarantor is unlimited and
     the obligations of Guarantor are continuing.

     DEFINITIONS.  The following  words shall have  the following  meanings when
     used in this Guaranty:

        BORROWER. The word "Borrower" means Chempower, Inc.

        GUARANTOR. The word "Guarantor" means American Eco Corporation.

      GUARANTY. The word "Guaranty" means this  Guaranty made by Guarantor  for
      the benefit of Lender dated February 28, 1997.

      INDEBTEDNESS. The word "Indebtedness" is used  in its most  comprehensive
      sense  and means  and includes  any  and  all of  Borrower's liabilities,
      obligations,  debts,  and  indebtedness   to  Lender,  now   existing  or
      hereinafter  incurred  or  created,  including, without  limitation,  all
      loans, advances, interest,  costs, debts, overdraft indebtedness,  credit
      card indebtedness, lease  obligations, other obligations, and liabilities
     of Borrower, or any of them, and any present or future judgments  against
     Borrower,  or  any  of  them;  and   whether  any  such  Indebtedness  is
     voluntarily or  involuntarily  incurred,  due  or not  due,  absolute  or
     contingent,  liquidated  or  unliquidated,  determined  or  undetermined;
     whether Borrower  may be liable individually  or jointly  with others, or
     primarily or secondarily, or as guarantor  or surety; whether recovery on
     the  Indebtedness may be  or may  become barred  or unenforceable against
      Borrower for any reason whatsoever;  and whether the  Indebtedness arises
      from transactions which may be voidable  on account of infancy, insanity,
      ultra vires, or otherwise.

     LENDER.  The  word  "Lender"  means  First  National  Bank  of  Ohio, its
      successors and assigns.

     RELATED  DOCUMENTS.  The  words  "Related  Documents"  mean  and  include
     without  limitation  ail  promissory   notes,  credit  agreements,   loan
     agreements,  environmental  agreements, guarantees,  security agreements,
     mortgages,  deeds of  trust, and  all other  instruments,  agreements and
    documents,  whether now  or  hereafter  existing, executed  in connection
    with the Indebtedness.

     NATURE OF GUARANTY. Guarantor's liability under this Guaranty shall be open
     and  continuous for  so long as  this Guaranty remains  in force. Guarantor
     intends  to guarantee at all times the  performance and prompt payment when
     due, whether at maturity or earlier by reason of acceleration or otherwise,
     of  all Indebtedness. Accordingly,  no payments made  upon the Indebtedness
     will  discharge  or diminish  the  continuing  liability  of  Guarantor  in
     connection  with any remaining portions  of the Indebtedness  or any of the
     Indebtedness  which  subsequently  arises  or  is  thereafter  incurred  or
     contracted.

     DURATION  OF  GUARANTY. This  Guaranty will  take  effect when  received by
     Lender without the necessity of any acceptance by Lender, or  any notice to
     Guarantor  or to  Borrower,  and  will continue  in  full force  until  all
     Indebtedness  incurred or contracted before receipt by Lender of any notice
     of revocation shall have been fully and finally paid and  satisfied and all
     other  obligations  of  Guarantor  under  this  Guaranty  shall  have  been
     performed in full. If  Guarantor elects to revoke this  Guaranty, Guarantor
     may only do so in writing. Guarantor's written notice of revocation must be
     delivered to  Lender at the  address of Lender  listed above or  such other
     place  as Lender  may  designate in  writing.  Written revocation  of  this
     Guaranty  will apply  only to  advances or  new Indebtedness  created after
     actual receipt  by  Lender  of  Guarantor's written  revocation.  For  this
     purpose  and  without limitation,  the  term  "new  Indebtedness" does  not
     include  Indebtedness  which  at  the  time  of  notice  of  revocation  is
     contingent, unliquidated, undetermined  or not due and  which later becomes
     absolute,  liquidated, determined or  due. This  Guaranty will  continue to
     bind  Guarantor for all Indebtedness  incurred by Borrower  or committed by
     Lender  prior  to  receipt of  Guarantor's  written  notice  of revocation,
     including any  extensions, renewals, substitutions or  modifications of the
     Indebtedness. All renewals, extensions, substitutions, and modifications of
     the  Indebtedness  granted after  Guarantor's revocation,  are contemplated
     under this Guaranty  and, specifically  will not  be considered  to be  new
     Indebtedness.  This Guaranty  shall  bind the  estate  of Guarantor  as  to
     Indebtedness  created  both before  and after  the  death or  incapacity of
     Guarantor,  regardless  of Lender's  actual  notice  of Guarantor's  death.
     Subject to the  foregoing, Guarantor's executor  or administrator or  other
     legal  representative may  terminate this  Guaranty in  the same  manner in
     which Guarantor might have terminated it and with  the same effect. Release
     of  any other  guarantor  or  termination  of any  other  guaranty  of  the
     Indebtedness  shall  not  affect  the  liability  of  Guarantor under  this
     Guaranty. A revocation received by Lender  from any one or more  Guarantors
     shall  not  affect the  liability of  any  remaining Guarantors  under this
     Guaranty.  IT IS ANTICIPATED THAT  FLUCTUATIONS MAY OCCUR  IN THE AGGREGATE
     AMOUNT OF INDEBTEDNESS  COVERED BY  THIS GUARANTY, AND  IT IS  SPECIFICALLY
     ACKNOWLEDGED  AND  AGREED BY  GUARANTOR THAT  REDUCTIONS  IN THE  AMOUNT OF
     INDEBTEDNESS,  EVEN TO ZERO DOLLARS ($0.00), PRIOR TO WRITTEN REVOCATION OF
     THIS  GUARANTY  BY GUARANTOR  SHALL NOT  CONSTITUTE  A TERMINATION  OF THIS
     GUARANTY. THIS GUARANTY  IS BINDING UPON  GUARANTOR AND GUARANTOR'S  HEIRS,
     SUCCESSORS  AND ASSIGNS  SO  LONG AS  ANY  OF THE  GUARANTEED  INDEBTEDNESS
     REMAINS UNPAID AND EVEN THOUGH THE INDEBTEDNESS GUARANTEED MAY FROM TIME TO
     TIME BE ZERO DOLLARS ($0.00).

     GUARANTOR'S  AUTHORIZATION TO LENDER.  Guarantor authorizes  Lender, either
     before or after any revocation hereof, without notice or demand and without
     lessening Guarantor's  liability under  this Guaranty,  from time  to time:
     (a) prior to revocation as set forth above, to make one  or more additional
     secured or  unsecured loans to Borrower, to  lease equipment or other goods
     to Borrower, or otherwise  to extend additional credit to  Borrower; (b) to
     alter, compromise, renew,  extend, accelerate, or  otherwise change one  or
     more times the time for payment or  other terms of the Indebtedness or  any
     part of the Indebtedness, including increases and  decreases of the rate of
     interest on  the Indebtedness; extensions  may be repeated  and may  be for
     longer than the  original loan term; (c) to take and  hold security for the
     payment of this Guaranty or the Indebtedness, and exchange, enforce, waive,
     fall  or decide  not to  perfect, and  release any  such security,  with or
     without  the substitution  of new  collateral; (d) to  release, substitute,
     agree not  to sue,  or deal with  any one or  more of  Borrower's sureties,
     endorsers, or other  guarantors on any  terms or in  any manner Lender  may
     choose; (e) to determine  how, when  and what application  of payments  and
     credits shall be made on the  Indebtedness; (f) to apply such security  and
     direct the order or  manner of sale thereof, including  without limitation,
     any nonjudicial sale  permitted by  the terms of  the controlling  security
     agreement or  deed of trust,  as Lender  in its  discretion may  determine;
     (g) to sell, transfer,  assign, or grant participations in  all or any part
     of the Indebtedness; and (h) to assign or transfer the Guaranty in whole or
     in part.

     GUARANTOR'S REPRESENTATIONS  AND  WARRANTIES.    Guarantor  represents  and
     warrants to Lender  that (a) no  representations or agreements of  any kind
     have been  made to Guarantor  which would limit or  qualify in any  way the
     terms of this Guaranty; (b) this Guaranty is executed at Borrower's request
     and not  at the  request of  Lender; (c)  Guarantor has not  and will  not,
     without  the  prior  written  consent  of Lender,  sell,  release,  assign,
     encumber,   hypothecate,  transfer,   or  otherwise   dispose  of   all  or
     substantially all  of  Guarantor's assets,  or  any interest  therein;  (d)
     Lender has made no  representation to Guarantor as to  the creditworthiness
     of Borrower; (e)  upon Lenders  request, Guarantor will  provide to  Lender
     financial and credit information in form acceptable to Lender, and all such
     financial  information  provided  to Lender  is  true  and  correct in  all
     material respects  and fairly presents the financial condition of Guarantor
     as of the dates thereof, and no material adverse change has occurred in the
     financial  condition  of  Guarantor   since  the  date  of   the  financial
     statements;  and (f) Guarantor has established  adequate means of obtaining
     from Borrower  on  a  continuing  basis  information  regarding  Borrower's
     financial condition.   Guarantor  agrees to  keep adequately informed  from
     such means  of any facts, events,  or circumstances which might  in any way
     affect Guarantor's risks under this Guaranty, and  Guarantor further agrees
     that, absent a request  for information, Lender shall have no obligation to
     disclose  to Guarantor any information  or documents acquired  by Lender in
     the course of its relationship with Borrower. 

     GUARANTOR'S WAIVERS.  Except as  prohibited  by applicable  law,  Guarantor
     waives any  right to require  Lender (a)  to continue lending  money or  to
     extend  other credit  to Borrower;  (b) to  make any  presentment, protest,
     demand, or  notice of any kind,  including notice of any  nonpayment of the
     Indebtedness  or of any nonpayment related  to any collateral, or notice of
     any action  or  nonaction on  the  part of  Borrower,  Lender, any  surety,
     endorser,  or other  guarantor in  connection with  the Indebtedness  or in
     connection with the creation of new or additional loans or obligations; (c)
     to resort for payment or to proceed directly or at once against any person,
     including  Borrower or any other guarantor; (d) to proceed directly against
     or  exhaust  any  collateral  held  by  Lender  from  Borrower,  any  other
     guarantor, or  any other person; (e) to give notice of the terms, time, and
     place of any  public or private sale of personal  property security held by
     Lender from Borrower  or to comply with any other  applicable provisions of
     the Uniform Commercial Code; (f) to pursue any other remedy within Lender's
     power; or (g) to  commit any act or omission  of any kind, or at  any time,
     with respect to any matter whatsoever.

     If now or hereafter (a) Borrower shall be  or become insolvent, and (b) the
     Indebtedness  shall  not  at all  times  until  paid  be fully  secured  by
     collateral  pledged  by  Borrower,  Guarantor  hereby  forever  waives  and
     relinquishes  in  favor  of  Lender  and  Borrower,  and  their  respective
     successors,  any  claim or  right  to  payment Guarantor  may  now  have or
     hereafter have or acquire against Borrower, by subrogation or otherwise, so
     that  at no  time shall  Guarantor be  or become  a "creditor"  of Borrower
     within the  meaning of 11 U.S.C. section 547(b), or any successor provision
     of the Federal bankruptcy laws.

     Guarantor also waives any and  all rights or defenses arising by  reason of
     (a) any  "one action" or "anti-deficiency"  law or any other  law which may
     prevent  Lender from bringing any action, including a claim for deficiency,
     against Guarantor, before or after  Lender's commencement or completion  of
     any foreclosure  action, either  judicially or  by exercise  of a  power of
     sale; (b) any  election of remedies by  Lender which destroys or  otherwise
     adversely affects Guarantor's  subrogation rights or  Guarantors rights  to
     proceed  against Borrower for  reimbursement, including without limitation,
     any loss  of rights  Guarantor may  suffer by reason  of any  law limiting,
     qualifying,  or discharging the  Indebtedness; (c) any  disability or other
     defense of Borrower, of  any other guarantor, or of any other person, or by
     reason  of the cessation of Borrower's liability from any cause whatsoever,
     other than  payment in full in  legal tender, of the  Indebtedness; (d) any
     right  to claim discharge of  the Indebtedness on  the basis of unjustified
     impairment  of  any collateral  for the  Indebtedness;  (e) any  statute of
     limitations, if  at any time any  action or suit brought  by Lender against
     Guarantor is commenced  there is  outstanding Indebtedness  of Borrower  to
     Lender which is not barred by any applicable statute of limitations; or (f)
     any defenses  given to guarantors  at law  or in equity  other than  actual
     payment  and performance  of  the  Indebtedness.  If  payment  is  made  by
     Borrower,  whether voluntarily or otherwise, or by  any third party, on the
     Indebtedness and  thereafter Lender is forced  to remit the amount  of that
     payment to Borrower's trustee in bankruptcy or to  any similar person under
     any  federal or state bankruptcy law or  law for the relief of debtors, the
     Indebtedness shall be considered  unpaid for the purpose of  enforcement of
     this Guaranty.

     Guarantor further waives and agrees not to assert or claim at  any time any
     deductions to  the amount guaranteed  under this Guaranty for  any claim of
     setoff, counterclaim, counter demand, recoupment or similar right,  whether
     such claim, demand or right may be asserted by the Borrower, the Guarantor,
     or both.

     GUARANTOR'S UNDERSTANDING WITH RESPECT TO  WAIVERS.  Guarantor warrants and
     agrees that  each of the waivers  set forth above is  made with Guarantor's
     full knowledge of  its significance  and consequences and  that, under  the
     circumstances, the waivers are reasonable and not contrary to public policy
     or law.   If any such waiver is determined to be contrary to any applicable
     law or  public policy, such  waiver shall be  effective only to  the extent
     permitted by law or public policy. 

     SUBORDINATION OF BORROWER'S DEBTS  TO GUARANTOR. Guarantor agrees that  the
     Indebtedness  of Borrower  to  Lender, whether  now  existing or  hereafter
     created,  shall  be prior  to  any claim  that  Guarantor may  now  have or
     hereafter  acquire  against  Borrower,  whether  or  not  Borrower  becomes
     insolvent. Guarantor hereby expressly subordinates any claim Guarantor  may
     have  against  Borrower, upon  any account  whatsoever,  to any  claim that
     Lender  may  now  or  hereafter  have against  Borrower.  In  the  event of
     insolvency  and consequent liquidation  of the  assets of  Borrower through
     bankruptcy, by an  assignment for  the benefit of  creditors, by  voluntary
     liquidation, or otherwise, the assets of Borrower applicable to the payment
     of  the claims  of both Lender  and Guarantor  shall be paid  to Lender and
     shall be first applied by Lender to the Indebtedness of Borrower to Lender.
     Guarantor does  hereby assign  to Lender  all claims which  it may  have or
     acquire against Borrower or  against any assignee or trustee  in bankruptcy
     of Borrower; provided however, that such assignment shall be effective only
     for the purpose of assuring to Lender  full payment in legal tender of  the
     Indebtedness. If Lender so requests, any notes  or credit agreements now or
     hereafter evidencing  any debts  or  obligations of  Borrower to  Guarantor
     shall be marked with a legend that  the same be subject to the Guaranty and
     shall  be delivered  to  Lender. Guarantor  agrees,  and Lender  hereby  is
     authorized, in the name of Guarantor, from time to time to execute  such 
     other documents and  to  take such  other actions  as Lender  deems 
     necessary  or appropriate  to  perfect,  preserve  and  enforce  its  
     rights  under  this Guaranty. 

     CONFESSION   OF  JUDGMENT.  Guarantor  hereby  irrevocably  authorizes  and
     empowers  any  attorney-at-law to  appear  in any  court of  record  and to
     confess judgment against Guarantor  for the unpaid amount of  this Guaranty
     as  evidenced by an affidavit signed by  an officer of Lender setting forth
     the  amount then  due, plus attorneys'  fees as provided  in this Guaranty,
     plus costs  of suit,  and to release  all errors,  and waive all  rights of
     appeal.   If a copy of this  Guaranty, verified by an affidavit, shall have
     been filed in the proceeding, it will not be necessary to file the original
     as a  warrant  of attorney.  Guarantor  waives the  right  to any  stay  of
     execution and the benefit of all exemption laws now or hereafter In effect.
     No single exercise of the foregoing  warrant and power to confess  judgment
     will be deemed to exhaust the power, whether or not any such exercise shall
     be held by any court to be  invalid, voidable, or void; but the power  will
     continue undiminished and may be exercised  from time to time as Lender may
     elect until all amounts owing on this Guaranty have been paid in full. 

     MISCELLANEOUS  PROVISIONS.   The following  miscellaneous provisions  are a
     part of this Guaranty: 

      AMENDMENTS.   This  Guaranty,   together  with   any  Related  Documents,
     constitutes the entire understanding and agreement  of the parties as  to
      the matters set forth  in this Guaranty.   No alteration of or  amendment
      to this Guaranty  shall be effective unless  given in writing and  signed
      by the party or  parties sought to be charged  or bound by the alteration
      or amendment.

     APPLICABLE LAW. This Guaranty has been  delivered to Lender and  accepted
     by Lender in the Sate  of Ohio.  If there is a lawsuit, Guarantor  agrees
     upon Lender's  request to  submit to the  jurisdiction of  the courts  of
     Summit County,  State of  Ohio. This  Guaranty shall be  governed by  and
    construed in accordance with the laws of the State of Ohio. 

    ATTORNEYS FEES;  EXPENSES.   Guarantor agrees  to pay  upon  demand all  of
    Lender's  costs and expenses, including  attorneys' fees and Lender's legal
    expenses, incurred  in connection  with the  enforcement of  this Guaranty.
    Lender may  pay someone else  to help enforce this  Guaranty, and Guarantor
    shall pay the costs  and expenses of  such enforcement. Costs and  expenses
    Include Lender's attorneys' fees and legal expenses whether or not there is
    a  lawsuit, including  attorneys' fees  and legal  expenses for  bankruptcy
    proceedings (and including efforts  to modify or vacate any  automatic stay
    or  injunction),  appeals,  and  any  anticipated  post-judgment collection
    services. Guarantor also shall pay all court costs and such additional fees
    as may be directed by the court. 

    NOTICES.   Except for revocation notices by Guarantor, all notices required
    to be given by  either party to the other  under this Guaranty shall  be in
    writing  and shall be effective  when actually delivered  or when deposited
    with  a nationally recognized overnight  courier, or when  deposited In the
    United States mail, first class postage prepaid, addressed to the  party to
    whom the notice is  to be given at the address shown above or to such other
    addresses  as either  party may  designate to  the other  in writing.   All
    revocation notices by Guarantor shall be  in writing and shall be effective
    only  upon  delivery to  Lender  as provided  above in  the  section titled
    "DURATION OF GUARANTY."  If there is more than one Guarantor, notice to any
    Guarantor will  constitute notice to  all Guarantors. For  notice purposes,
    Guarantor  agrees to  keep  Lender informed  at  all times  of  Guarantor's
    current address. 

    INTERPRETATION.   In all cases  where there  is more than  one Borrower  or
    Guarantor, then  all words used in  this Guaranty In the  singular shall be
    deemed to have  been used in the plural where  the context and construction
    so require;  and  where there  is  more than  one  Borrower named  in  this
    Guaranty or when this Guaranty is executed by more than  one Guarantor, the
    words "Borrower" and "Guarantor" respectively shall mean all and any one or
    more  of them. The words  "Guarantor," "Borrower" and  "Lender" include the
    heirs,  successors,  assigns, and  transferees of  each  of them.   Caption
    headings in this Guaranty are for  convenience purposes only and are not to
    be used to interpret or define the provisions of this Guaranty. If  a court
    of  competent jurisdiction  finds  any provision  of  this Guaranty  to  be
    invalid or unenforceable  as to  any person or  circumstance, such  finding
    shall not render  that provision invalid  or unenforceable as to  any other
    persons  or circumstances, and all provisions of this Guaranty in all other
    respects shall remain valid and enforceable. If any one or more of Borrower
    or  Guarantor are  corporations or  partnerships, it  is not  necessary for
    Lender to  inquire into  the  powers of  Borrower or  Guarantor  or of  the
    officers, directors, partners,  or agents  acting or purporting  to act  on
    their  behalf, and any  Indebtedness made or  created in reliance  upon the
    professed exercise of such powers shall be guaranteed under this Guaranty. 

    WAIVER.  Lender  shall not be deemed  to have waived any  rights under this
    Guaranty unless  such waiver is given  in writing and signed  by Lender. No
    delay  or omission  on the  part of  Lender in  exercising any  right shall
    operate as a waiver of such right or any other right. A waiver by Lender of
    a provision of this Guaranty shall not prejudice or constitute  a waiver of
    Lender's right otherwise to demand strict compliance with that provision or
    any other  provision of this Guaranty.  No prior waiver by  Lender, nor any
    course of dealing between  Lender and Guarantor, shall constitute  a waiver
    of any of  Lenders rights or  of any of Guarantor's  obligations as to  any
    future transactions.  Whenever the consent of Lender is required under this
    Guaranty, the granting of such consent by Lender in any  instance shall not
    constitute continuing consent to subsequent instances where such consent is
    required and  in all cases such  consent may be granted or  withheld in the
    sole discretion of Lender. 

    EXHIBIT A.  An exhibit, titled "Exhibit A", is attached to this Guaranty 
    and by this reference is made part of this Guaranty just as if the 
    provisions, terms and conditions of the Exhibit had been fuly set forth
    in this Guaranty. 

    EACH UNDERSIGNED GUARANTOR  ACKNOWLEDGES HAVING READ ALL THE  PROVISIONS OF
    THIS  GUARANTY AND  AGREES  TO  ITS  TERMS.  IN  ADDITION,  EACH  GUARANTOR
    UNDERSTANDS THAT THIS GUARANTY IS  EFFECTIVE UPON GUARANTOR'S EXECUTION AND
    DELIVERY OF  THIS GUARANTY TO  LENDER AND THAT  THE GUARANTY  WILL CONTINUE
    UNTIL TERMINATED IN THE MANNER SET FORTH IN THE SECTION TITLED "DURATION OF
    GUARANTY."  NO  FORMAL  ACCEPTANCE BY  LENDER  IS  NECESSARY  TO MAKE  THIS
    GUARANTY EFFECTIVE. THIS GUARANTY IS DATED FEBRUARY 28, 1997. 

       NOTICE: FOR THIS NOTICE "YOU" MEANS THE GUARANTOR. WARNING: BY SIGNING
       THIS PAPER YOU GIVE  UP YOUR RIGHT TO NOTICE AND COURT  TRIAL.  IF YOU
       DO NOT  PAY ON TIME, A COURT JUDGMENT MAY BE TAKEN AGAINST YOU WITHOUT
       YOUR PRIOR KNOWLEDGE AND THE POWERS OF  A COURT CAN BE USED TO COLLECT
       FROM YOU  REGARDLESS OF ANY CLAIMS  YOU MAY HAVE AGAINST  THE CREDITOR
       WHETHER FOR  RETURNED GOODS, FAULTY GOODS, FAILURE  ON CREDITOR'S PART
       TO COMPLY WITH THE AGREEMENT, OR ANY OTHER CAUSE.



     GUARANTOR:

     American Eco Corporation 

     By: /s/ Michael E. McGinnis
	 -------------------------------
          President & CEO