EXHIBIT 10.12

                              RINECO RECYCLING, LLC
                                 629 Vulcan Road
                             Haskell, Arkansas 72015
              Telephone: (501) 778-9089 / Facsimile: (501) 778-8505


                                  March 6, 2003

OnSite Technology LLC
Attention: James S. Percell, President
2600 South Loop West, Suite 645
Houston, TX 77054

     Re: $1,500,000.00 business loan


Dear James:

     We  are  pleased  to  advise  you that Rineco Recycling, LLC ("Lender") has
approved  your  loan  request  for  the  above-mentioned  business loan upon and
subject  to  the  following  terms  and  conditions:

BORROWER(S):        Environmental  Safeguards,  Inc.,  a Nevada corporation with
                    its  chief executive office in Houston, Texas, National Fuel
                    &  Energy,  Inc.,  a  Wyoming  corporation  with  its  chief
                    executive  office  in  Houston, Texas, and OnSite Technology
                    LLC,  an  Oklahoma  limited liability company with its chief
                    executive office in Houston, Texas (collectively "BORROWERS"
                    and  individually,  a  "BORROWER")

LIABILITY
PROVISION:          Joint  and  Several

AMOUNT:             $1,500,000.00  (the  "Loan")  to  be  disbursed in three (3)
                    separate advances of $500,000.00 each on March 15, 2003, May
                    15,  2003 and July 15, 2003, provided no event of default or
                    other  event which, with the giving of notice or the passage
                    of time, or both, would constitute an event of default under
                    any  Loan  Document  has  occurred  and  is  continuing.

PURPOSE:            Working  capital

COLLATERAL:         Three  (3)  separate  Indirect  Thermal  Desorption  Units
                    ("ITDS"),  together  with  any  and  all  substitutions,
                    replacements,  accessions,


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                    permits,  licenses,  proceeds and awards of whatever kind in
                    respect  of  the  foregoing.  One ITD is now and will at all
                    times  be  located in Haskell, Arkansas (unless the Contract
                    between  Borrower  OnSite Technology LLC and Rineco Chemical
                    Industries,  Inc.  referred  to  below  shall  have  been
                    terminated,  in  which  event  said  unit  may be moved, but
                    without  affecting  or  canceling Lender's security interest
                    therein);  the  location  of  the remaining ITDs will at all
                    times  be disclosed to Lender, Borrowers shall identify each
                    ITD  by  make  and model number, serial number and any other
                    descriptive  information  available  to  Borrowers.

RATE:               Twelve  percent  (12.0%)  per  annum

REPAYMENT:          In  twenty  (20)  quarterly installments of principal in the
                    amount  of $75,000.00 each, plus accrued and unpaid interest
                    on  the  unpaid  principal  balance  of the Loan, such equal
                    quarterly installments of principal, plus accrued and unpaid
                    interest,  to  be due and payable beginning August 31, 2003,
                    and  on  the  last  day  of each November, February, May and
                    August  thereafter until Maturity, at which time, the entire
                    unpaid  principal  of,  together with all accrued and unpaid
                    interest  on,  the  Loan  shall  be due and payable in full.
                    Borrowers  shall have the right to prepay all or any part of
                    the  Loan  at  any time without premium or penalty; provided
                    specifically,  however,  no partial prepayment shall operate
                    to  postpone,  delay,  cancel  or  diminish  any  regularly
                    scheduled  principal  installment.

ORIGINATION FEE:    Eight percent (8.0%) for each $500,000.00 principal advance

MATURITY:           May 31, 2008

COMMITMENT
ACCEPTANCE:         This  commitment is to be accepted and returned to Lender no
                    later  than  March  7,  2003, after which Lender in its sole
                    discretion may determine the commitment to be null and void.

CLOSING DATE:       The  Loan  is  to  close  on or before March 20, 2003, after
                    which this commitment may be determined null and void by the
                    Lender.

CONDITIONS:         This Commitment and the consummation of the Loan transaction
                    are  conditioned  upon  (a)  the  completion  by  Lender and
                    Lender's  counsel  of such due diligence investigations with
                    respect  to each Borrower, its principals and the Collateral
                    security  for  the  Loan  as  Lender and/or Lender's counsel
                    shall  deem  appropriate,  (b) the execution and delivery by
                    each  Borrower  of  definitive documentation relating to the
                    Loan,  (c)  the  absence  of  any  development  which  could
                    adversely affect the proposed Loan, and (d) Lender's receipt
                    of  assurances


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                    acceptable  to  Lender  that Lender will receive Warrants to
                    purchase  1,500,000  shares  of the common stock of Borrower
                    Environmental Safeguards, Inc. for $0.01 each, together with
                    assurances  acceptable  to  Lender that the issuance of said
                    Warrants  and  all  stock  which  may  be purchased pursuant
                    thereto  will  not  violate  any federal or state securities
                    laws. All such documents, investigations and conditions must
                    be  satisfied in a manner acceptable to Lender. Lender's due
                    diligence  investigations  shall include, but not be limited
                    to,  the  receipt and review of the following items, each of
                    which  will  be  obtained  at  the  expense of Borrowers and
                    submitted  to  Lender  in  sufficient  time  for  Lender  to
                    adequately  evaluate  its  acceptability,  and each of which
                    shall  be  in  form  and  substance  satisfactory to Lender.

                    (i)       a  current  UCC,  judgment  and  lien  search with
                              respect  to  each  Borrower and the ITDs and other
                              Collateral  for  the  Loan;

                    (ii)      operating  statements,  balance  sheets  and  tax
                              returns  for  each Borrower for each of their past
                              three  (3)  fiscal  years;

                    (iii)     copies  of  all  organizational  documents of each
                              Borrowers  and  Certificates of Good Standing from
                              applicable  governmental  authorities with respect
                              to  each  Borrower;

                    (iv)      opinions  of counsel to each Borrower with respect
                              to  each Borrower, the Collateral security for the
                              Loan and the definitive loan documentation, all of
                              which  shall  be  acceptable  to Lender, and which
                              opinions  shall,  without  limiting  the foregoing
                              state,  inter  alia,  (a)  that  the interest rate
                                      -----  ----
                              established  by  the Loan Documents, together with
                              any  and  all  other  charges  due  or  payable
                              thereunder  which  are or could be construed to be
                              interest,  do  not  violate  the usury laws of the
                              State  of  Texas  and that the Texas choice of law
                              designation herein and in the Loan documents would
                              be  given  effect  and  upheld  by a federal court
                              located  in  the  State  of Texas or a Texas state
                              court,  and  (b) that the issuance of the Warrants
                              hereinabove  provided  for  does  not and will not
                              violate  any  federal  or  state  securities laws;

                    (v)       evidence  of  the absence of material (in Lender's
                              sole  discretion)  litigation  affecting  each
                              Borrower  or the Collateral security for the Loan;

                    (vi)      certificates  and  affidavits  of  each  Borrower
                              and/or their respective principals with respect to
                              certain of the above items and such other items as
                              Lender  may  reasonably  request;  and


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                    (vii)     an  Addendum  to  that  certain  Hazardous  Waste
                              Recycling Services Contract - U.S., dated February
                              15,  2003,  between Borrower OnSite Technology LLC
                              and  Rineco Chemical Industries, Inc., pursuant to
                              which  Addendum  said  Contract  shall  have  been
                              modified  by  (i)  canceling the 90-day withdrawal
                              right  contained  therein  in  favor  of  OnSite
                              Technology  LLC  (the  90-day  withdrawal  right
                              therein  in  favor  of Rineco Chemical Industries,
                              Inc. shall remain intact), (ii) extending the term
                              of said Contract to May 31, 2008, and (iii) giving
                              Rineco  Chemical  Industries,  Inc.  the  right to
                              offset  against any and all sums due from it under
                              said  Contract  the amount(s) which Borrowers fail
                              to  pay  under  the  Loan  Documents.

LOAN DOCUMENTS:     The definitive documentation for the Loan shall include:

                    (i)       Promissory  Note;

                    (ii)      Security Agreement pursuant to which each Borrower
                              will  grant  and  give  Lender  a  first  priority
                              security  interest  in  the  ITDs  and  other
                              Collateral;

                    (iii)     such  UCC  financing  statements  and  other
                              documentation  as  Lender  and  its  counsel shall
                              require  for  filing  with  the Texas Secretary of
                              State  and  any other appropriate public officials
                              deemed  necessary  or  appropriate  by  Lender  or
                              Lender's  counsel  in  order to perfect a security
                              interest  in  the  Collateral;  and

                    (iv)      such  other  additional documents as Lender or its
                              counsel  shall  reasonable  require.

BORROWERS'
REPRESENTATIONS:    1.        Borrowers  represent  to  Lender  that there is no
                              action,  suit  or  proceeding, or any governmental
                              investigation  or  any  arbitration,  in each case
                              pending  or,  to  the  knowledge  of  Borrowers,
                              threatened  against  Borrowers  or  any  of  the
                              Collateral  before  any  governmental  or
                              administrative  body, agency or official which (i)
                              challenges  the validity of this Commitment or the
                              Loan Documents or the authority of any Borrower to
                              enter  into  this Commitment or the Loan Documents
                              or to perform the transactions contemplated hereby
                              or  thereby, or(ii) if adversely determined, would
                              have  a material adverse effect on any Borrower or
                              its  properties.


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                    2.        On  the  Closing Date, each Borrower shall certify
                              to  Lender  whether  and  to what extent there has
                              been any adverse change in the business, financial
                              condition or results of operations of any Borrower
                              or the Collateral from that shown on the financial
                              statements and reports referred to above. Any such
                              adverse  change  must  be  acceptable  to  Lender.

                    3.        Borrowers  represent  and  warrant  that Borrowers
                              OnSite  Technology LLC is the owner of and has the
                              right to grant and give Lender a security interest
                              in  the  ITDs.

                    4.        The  Loan  Documents shall contain such additional
                              representations  and  warranties  of each Borrower
                              concerning  such  Borrower,  its  constituent
                              shareholder(s)  and  member(s),  acceptable  to
                              Lender.

AFFIRMATIVE
COVENANTS:          The  Loan  Documents  will  provide  that:

                    1.        Upon the failure of any Borrower to perform any of
                              its obligations hereunder or to perform any of its
                              material  obligations  under  any  of  the  Loan
                              Documents  (such  material obligations to include,
                              but  not  be  limited  to, the prompt and punctual
                              payment  of principal and interest, the obligation
                              to  insure  the  Collateral  with  Lender  as loss
                              payee,  and  the  Borrower  without  prior written
                              notice  to  Lender),  Rineco  Chemical Industries,
                              Inc.  shall  have the right to immediately set off
                              against  its  obligations  under  that  certain
                              Hazardous Waste Recycling Services Contract - U.S.
                              dated  February  15,  2003,  as  amended,  in  the
                              amount(s)  which  any  Borrower  has failed to pay
                              Lender  hereunder  or  under  any  of  the  Loan
                              Documents;  and

                    2.        Each  Borrower  shall  agree  to  such  additional
                              financial covenants as Lender or its counsel shall
                              reasonably  require.

NEGATIVE
COVENANTS:          The Loan Documents will provide that no Borrower will:

                    (i)       create, assume or suffer to exist any liens on any
                              of  the  Collateral  for  the  Loan;

                    (ii)      without  the  express  prior  written covenants of
                              Lender,  which  consent  will  not be unreasonably
                              withheld,  merge  into  or


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                              consolidate  with  any other company or change the
                              corporate  structure  of  such  Borrower;

                    (iii)     dispose  of  all  or a substantial portion of such
                              Borrower's  assets  or  assets  which  provide  a
                              substantial part of the earnings of such Borrower;
                              or

                    (iv)      sell,  or  contract  to sell, all or a substantial
                              part  of  the  assets  of  such  Borrower.

TERMINATION:        Lender may, at its option exercised by written notice to the
                    addresses  of  this  Commitment  at its address shown above,
                    terminate  this  Commitment  if  any of the following events
                    occurs  prior  to  Closing:

                    (a)       Any  sale,  transfer,  pledge,  encumbrance  or
                              assignment  off  any  Borrower's  interest  in the
                              Collateral;

                    (b)       Any  sale,  transfer,  pledge,  encumbrance  or
                              assignment  of  any legal, equitable or beneficial
                              interest in Borrower OnSite Technology LLC without
                              the  express  prior  written  consent  of  Lender;

                    (c)       Any  Borrower  breaches any provision contained in
                              this  Commitment;

                    (d)       Any  Borrower  has  made  any  representation  or
                              warranty  to Lender which was untrue or false when
                              made in a material respect or which becomes untrue
                              or  false  in  a  material  respect;

                    (e)       Any  petition  of  bankruptcy,  insolvency  or
                              reorganization  is  filed  by  or  against  any
                              Borrower.

                    Delay  in  the  exercise of Lender's right to terminate this
                    Commitment  upon  the  occurrence of any of the above events
                    shall  not  be  construed  as  a  waiver  of such right. The
                    failure  of  Lender  to  act  in any such event shall not be
                    construed  as  a  waiver of its right to act with respect to
                    any  subsequent  event of a similar nature. Upon termination
                    as  set forth above, all of Lender's obligations pursuant to
                    this  Commitment  shall cease and be of no further force and
                    effect  whatsoever.


MISCELLANEOUS:      1.        This  Commitment  shall  not  be  effective  until
                              accepted  by  each  Borrower in the State of Texas
                              and  shall  be governed by and construed under the
                              internal laws of the State of Texas and applicable
                              federal  laws.


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                    2.        Whenever  this  Commitment  refers  to any item or
                              thing  having  to be satisfactory or acceptable to
                              Lender,  such  item or thing must be acceptable to
                              Lender  in  all respects, in its sole and absolute
                              discretion.

                    3.        All  approvals  of or waivers by Lender in respect
                              of any of the terms, conditions or requirements of
                              this  Commitment  must  be  in  writing.

                    4.        No waiver with respect to any condition, breach or
                              other  matter  shall  extend to or be taken in any
                              manner  whatsoever  to affect any other condition,
                              breach  or  matter  or  affect  Lender's  rights
                              resulting  therefrom.

                    5.        Each Borrower hereby waives any right which it may
                              have  to  a trial by jury in any action brought on
                              this  Commitment  or  in any way connected with or
                              related  to the Loan. Each Borrower hereby submits
                              in  any  legal  proceeding  relating  to  this
                              Commitment  to  arbitration.

                    6.        Any  controversy  or  claim  between  or among the
                              parties  hereto,  including,  buy  not limited to,
                              those  arising  out  of  or  relating  to  this
                              Commitment  or  any  documents  executed  pursuant
                              hereto,  including,  without limitation, any claim
                              based on or arising from an alleged tort, shall be
                              determined  by binding arbitration (subject to any
                              reservation  or  rights  below) in accordance with
                              the  Federal  Arbitration  Act  (or,  if  not
                              applicable,  the  applicable state law), the Rules
                              of  Practice  and Procedure for the Arbitration of
                              Commercial  Disputes  of  the American Arbitration
                              Association  ("AAA"),  and  any  special rules set
                              forth  below.  In  the event of any inconsistency,
                              any  such  special  rules  shall control. Judgment
                              upon  any  arbitration award may be entered in any
                              court  having  jurisdiction.  Either  Lender  or
                              Borrowers may bring an action, including a summary
                              or  expedited proceeding, to compel arbitration of
                              any  controversy or claim to which this Commitment
                              Letter  applies  in  any court having jurisdiction
                              over  such  action.  The  arbitration  shall  be
                              conducted  in  Little  Rock,  Arkansas,  and
                              administered  by  AAA,  which  will  appoint  an
                              arbitrator,  if AAA is unable or legally precluded
                              from  administering  the  arbitration,  then  the
                              Judicial  Arbitration and Mediation Services, Inc.
                              will  serve.  All  arbitration  hearings  will  be
                              commenced  within  90  days  of  the  demand  for
                              arbitration. The arbitrator shall, for the showing
                              of  cause  only,  be  permitted  to  extend  the
                              commencement  of  such  hearing  for  up  to  an
                              additional  30  days.  Nothing  in  this


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                              Commitment  shall  be deemed to limit the right of
                              Lender (i) to exercise self-help remedies such as,
                              but  not  limited to, setoff; or (ii) to foreclose
                              against  the Collateral; or (iii) to obtain from a
                              court  provisional  or ancillary remedies such as,
                              but  not  limited  to,  injunctive  relief  or the
                              appointment  of  a  receiver.  Lender may exercise
                              such  self-help  rights,  foreclose  upon  such
                              property,  or obtain such provisional or ancillary
                              remedies  before,  during or after the pendency of
                              any  arbitration  proceeding  brought  pursuant to
                              this  Agreement. Neither the exercise of self-help
                              remedies  nor the institution or maintenance of an
                              action  of foreclosure or provisional or ancillary
                              remedies shall constitute a waiver of the right of
                              any  party,  including  the  claimant  in any such
                              action, to arbitrate the merits of the controversy
                              or  claim  occasioning  resort  to  such remedies.

                    7.        This  Commitment  may  be  signed in any number of
                              counterparts  and  by the different parties hereto
                              on  separate  counterparts,  each  of which shall,
                              when  so  executed  and delivered, be an original,
                              but all of which shall together constitute one and
                              the  same  instrument.

     THIS  COMMITMENT  AND  THE OTHER LOAN DOCUMENTS REFERRED TO OR CONTEMPLATED
HEREIN REPRESENT, OR WILL REPRESENT, THE FINAL AGREEMENT BETWEEN THE PARTIES AND
MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL
AGREEMENT  OF  THE  PARTIES.  THERE  ARE  NO  UNWRITTEN  ORAL  AGREEMENTS OF THE
PARTIES.

     If  the  above terms and conditions are acceptable to you, please sign this
Commitment  in  the  space  provided  below and return the same to Lender at the
address  which  appears  on  this  letterhead.

                                          Sincerely,

                                          RINECO RECYCLING, LLC


                                          By:  Harry C. Erwin III, President
                                             -----------------------------------


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AGREED TO AND ACCEPTED:


ENVIRONMENTAL SAFEGUARDS, INC.


By: _________________________________

Name: _______________________________

Title: ______________________________

Date: _______________________________



NATIONAL FUEL & ENERGY, INC.


By: _________________________________

Name: _______________________________

Title: ______________________________

Date: _______________________________



ONSITE TECHNOLOGY LLC


By: _________________________________

Name: _______________________________

Title: ______________________________

Date: _______________________________


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