EXHIBIT 10.8

                                PROMISSORY NOTE
                                ---------------

$1,500,000.00                                                     Houston, Texas
                                                                  March 20, 2003

     FOR VALUE RECEIVED, ONSITE TECHNOLOGY L.L.C., an Oklahoma limited liability
company, ENVIRONMENTAL SAFEGUARDS, INC., a Nevada corporation, and NATIONAL FUEL
&  ENERGY, INC., a Wyoming corporation, each with its principal office and chief
executive  office  at  2600  South  Loop  West,  Suite 645, Houston, Texas 77054
(collectively,  "MAKERS" and individually, a "MAKER"), jointly and severally and
unconditionally  promise  to  pay  to  the  order  of  RINECO recycling, LLC, an
Arkansas  limited liability company ("PAYEE"), at its office at 629 Vulcan Road,
Haskell, Arkansas 72015, or such other place as the holder of this Note may from
time  to time designate, the principal sum of ONE MILLION, FIVE HUNDRED THOUSAND
AND  NO/100s  DOLLARS  (51,500,000.00),  together with interest thereon from the
date  or  dates  of  disbursement  of  advances  hereunder at the rate of twelve
percent  (12.0%) per annum. After maturity, this Note shall bear interest at the
maximum  rate  permitted  by  applicable  law. Interest shall be computed on the
basis  of  360  days,  but  applied  to  the  actual number of days elapsed. All
payments  hereunder  shall be payable in lawful money of the United States which
shall  be  legal tender for public and private debts at the time of payment. All
past  due  principal  and  interest  shall  bear  interest  at  the maximum rate
permitted  by  applicable law to be charged for past due principal and interest.
Said  sums  shall  be  due  and  payable  as  follows:

             In quarterly installments of principal in the amount of
             $75,000.00  each,  plus  accrued and unpaid interest on
             the  unpaid  principal  balance  hereof,  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 May 31,2008,
             at  which time the entire unpaid principal of, together
             with  all  accrued  and  unpaid  interest  on,  this
             instrument  shall  be  due  and  payable  in  full.

     This  Note  is  executed  in connection with and arises out of a Commitment
Letter (herein so called) dated March 6, 2003 executed by and between Makers and
Payee,  and  is  entitled  to  the  benefits  thereof,  including all collateral
security  provided  for  therein or in connection therewith, and is secured by a
Security  Agreement (herein so called) of even date herewith granting and giving
Payee  a  security  interest in three (3) Indirect Thermal Desorption Units more
particularly  described  therein.

     In  the  event of default in the payment of any installment of principal or
interest due hereunder, or any pan thereof, as and when same becomes due, and if
such  default  continues  uncured  for  a  period  of ten (10) days, or upon the
occurrence of any other Event of Default under the Commitment Letter or Security
Agreement,  then  in  any  such  event  the  entire  unpaid  principal


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PROMISSORY  NOTE
($1,500,000.00)
Page  2
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balance  hereof,  together  with  all  accrued interest, shall, at the option of
Payee,  become  at  once  due  and  payable  upon  notice  thereof  to Makers in
accordance  with  Payee  policy  for  notice  of  payment  defaults.

     Makers shall have the privilege of prepaying this instrument, in part or in
whole,  at  any time without premium or penalty; provided, no partial prepayment
shall  operate  to  postpone,  delay  or  diminish  the next regularly scheduled
installment.

     If  this  obligation,  after default, is placed in the hands of an attorney
for  collection,  Makers  and any and all .other persons now or hereafter liable
hereon  will  be  obligated  to  pay  the  holder hereof an additional sum, as a
reasonable  attorney's  fee,  not  to  exceed  ten  percent  (10%) of the unpaid
principal  plus  all  accrued  interest.

     Makers shall pay to Payee a late charge for any installment not received by
the  Payee  when due in the amount of ONE HUNDRED AND NO/100s DOLLARS ($100.00);
such  late charge shall apply separately to each installment past due, but shall
only  be  assessed once as to each late payment. Makers stipulate and agree that
any such late charge(s) shall not be deemed to be additional interest, but shall
be  an  assessment  to  induce  timely  performance  of  the terms of this Note.

     If  any  payment  of principal or interest due under this Note shall become
due  on  a  Saturday,  Sunday  or  public holiday under the laws of the State of
Arkansas  on which Payee is not open for business, such payment shall be made on
the  next succeeding Business Day, and such extension of time shall in such case
be  included  in  computing  interest  in  connection  with  such  payment.

     Notwithstanding any provisions to the contrary contained in this Note or in
any agreement securing or relating to the debt evidenced hereby, it is expressly
provided  that  in  no  case  or event whatsoever shall the aggregate of (i) all
interest  on the unpaid balance hereof, accrued or paid from the date hereof and
(ii)  the  aggregate  of any other amounts accrued or paid pursuant hereto or to
any  such  other  agreement,  which under applicable laws are or maybe deemed to
constitute  interest,  ever  exceed  the  maximum  rate  of interest which could
lawfully  be contracted for, charged or received on the unpaid principal balance
hereof  plus  any  other  pertinent  indebtedness.  In  this  connection,  it is
expressly  stipulated  and  agreed  that it is the intent of Makers and Payee to
contract  in  strict compliance with the applicable usury laws from time to time
in effect. In furtherance thereof, none of the terms of this Note or any related
agreement  shall ever be construed to create a contract to pay, as consideration
for  the use, forbearance or detention of money, interest at a rate in excess of
the  maximum  rate  permitted  to  be  contracted  for,  charged  or received by
applicable law. If under any circumstances the aggregate amounts paid hereon for
any  reason  include  amounts  which  by law are deemed interest which exceed or
would  exceed  the  maximum  amount  of  interest which could lawfully have been
contracted  for, charged or received, Makers stipulate that such amounts will be
deemed  to have been paid as a result of an error on the part of both Makers and
Payee,  and  the  party


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PROMISSORY  NOTE
($1,500,000.00)
Page3
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receiving  such  excess  payment  shall,  promptly  upon receiving such payment,
refund  the  amount  of such excess or, at Payee's option, if there is an unpaid
principal  balance of this Note, credit such excess against the unpaid principal
balance  hereof.  In  addition, all sums paid or agreed to be paid to the holder
hereof  for  the  use,  forbearance  or  detention of money shall, to the extent
permitted  by  applicable  law,  be  amortized,  prorated,  allocated and spread
throughout  the  full term of the indebtedness represented hereby, in the manner
provided  by  law to the end that the actual rate of interest hereon shall never
exceed  the applicable maximum rate. If any term or provision of this Note or of
any  related  agreement  under any circumstances would require the payment of an
amount for the use, forbearance, or detention of money which, in addition to all
other  amounts  theretofore  paid and constituting interest under the applicable
law,  would  exceed the maximum rate of interest which could lawfully be charged
under  such  circumstances,  then  the  amount  which Makers or any other person
liable  therefor  is  obligated  to  pay in such circumstances, but only in such
circumstances, is hereby automatically reduced to the maximum amount which could
lawfully  be  charged  under applicable law. THE MAXIMUM LAWFUL RATE OF INTEREST
APPLICABLE  HERETO  SHALL BE THE HIGHEST OF (i) THE MAXIMUM RATE PROVIDED BY THE
LAWS  OF  THE  STATE  OF TEXAS FOR LOANS OF THE TYPE EVIDENCED HEREBY AND BY THE
INSTRUMENTS SECURING THE INDEBTEDNESS EVIDENCED HEREBY, OR (ii) THE MAXIMUM RATE
PROVIDED IN APPLICABLE FEDERAL LAW WHICH PREEMPTS, OR PROVIDES AN ALTERNATIVE OR
ALTERNATIVES  TO,  OTHERWISE  APPLICABLE  STATE  LAW,  OR (iii) THE MAXIMUM RATE
PROVIDED  IN ANY SUBSEQUENTLY ENACTED LAW OF THE STATE OF TEXAS IN EFFECT AT THE
TIME  OF  ANY  RENEWAL,  EXTENSION  OR  MODIFICATION  HEREOF. TO THE EXTENT THAT
OTHERWISE  APPLICABLE  STATE  LAW  IS  PREEMPTED BY A FEDERAL LAW WHICH DOES NOT
LIMIT  THE  RATE  OF  INTEREST  WHICH  MAY  BE  CHARGED, THIS PARAGRAPH SHALL BE
INAPPLICABLE.  The  provisions  of  this  Paragraph  shall  control  all  other
provisions  hereof  and of all agreements, whether now or hereafter existing and
whether  written  or oral, between Makers and Payee or between the Payee and any
other  person  liable  hereon.  In  connection  with  this  Paragraph,  Makers
acknowledge  and  represent  to  Payee  that  the proceeds of the Loan evidenced
hereby  are  and  shall  be  used  solely  for  a  business  purpose.

     The  records  of  Payee  or  any  holder  of  this Note shall be conclusive
evidence  of the amounts owing under this Note in the absence of manifest error.

     Whenever  used  herein,  the  words "Makers" and "Payee" shall be deemed to
include  their  respective  successors  and  assigns.

     Makers  hereby  waive  presentment,  protest,  demand, diligence, notice of
dishonor  and of nonpayment and waive, relinquish and renounce all rights to the
benefits  of  any  statute  of  limitations  and  any  moratorium, appraisement,
exemption  and  homestead now provided or which may hereafter be provided by any
federal  or state statute, including, but not limited to, exemptions provided by
or  allowed  under  the United States Bankruptcy Code, 11 U.S.C. 101 et seq., as
                                                                     -- ---
now  enacted  or hereafter amended, both as to themselves and as to all of their
respective  properties,  whether  real  or  personal,


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PROMISSORY  NOTE
($1,500,000.00)
PAGE  4
-------------------

against the enforcement and collection of the obligations evidenced by this Note
and  any  and  all  extensions,  renewals,  modifications,  replacements  and
substitutions  hereof.

     With  respect  to  any  claim  arising  out  of  this  instrument,  Makers
irrevocably  submit to the non-exclusive jurisdiction of the courts of the State
of  Arkansas, and the United States District Court located in the City of Little
Rock,  Pulaski  County,  Arkansas,  and Makers hereby also irrevocably waive any
objection  which  they  may have at any time to the laying of venue of any suit,
action  or  proceeding  arising out of or relating to this instrument brought in
any  such court. Makers hereby further irrevocably waive any claim that any such
suit,  action  or  proceeding  brought  in  any  such  court has been brought in
an inconvenient  forum,  and irrevocably waive the right to object, with respect
to  such  claim, suit, action or proceeding brought in any such court, that such
court  does  not  have  jurisdiction  over  such  party.

     This instrument has been executed in and shall be governed by and construed
under the substantive laws of the State of Texas and by applicable federal laws.


ONSITE  TECHNOLOGY  L.L.C.,                  ENVIRONMENTAL  SAFEGUARDS,  INC.,
an Oklahoma limited liability company        a Nevada corporation

By:  /s/  James S. Percell                   By:  /s/  James S. Percell
   ---------------------------------            --------------------------------

Name:     James  S.  Percell                 Name:     James  S.  Percell

Title:    President                          Title:    President


NATIONAL  FUEL  &  ENERGY,  INC.,
a  Wyoming  corporation

By:  /s/  James S. Percell
   ---------------------------------

Name:     James  S.  Percell

Title:    President


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