RENEWAL
                                 PROMISSORY NOTE


$2,500,000.00                                         Date:    December 12, 2000



     For value received the undersigned  jointly and severally promise to pay to
PARAWON CORPORATION,  or order, the payee, the principal sum of TWO MILLION FIVE
HUNDRED THOUSAND AND NO/100 DOLLARS  ($2,500,000.00)  with interest thereon from
the date, at the rates set forth below. The said principal and interest shall be
payable  at the  office of  Parawon  Corporation,  which is  located  at 164 St.
Francis Street, Suite 205, Mobile, Alabama 36602.

     Interest only on said principal sum at the rates  provided for  hereinbelow
     shall be due and  payable on January 1, 2001;  February  1, 2001;  March 1,
     2001; April 1, 2001; and the remaining  principal and interest shall be due
     and  payable on May 1, 2001.  The  interest  rate shall be 18% per annum on
     January 1, 2001;  and the interest  rate shall be 12% per annum on February
     1,  2001,  March 1, 2001,  April 1, 2001 and May 1, 2001.  In the event all
     principal and interest is not paid by May 1, 2001,  the interest rate shall
     be eighteen percent (18%) per annum, retroactive to February 1, 2001.

     In the event all  principal  and interest is not paid by May 1, 2001,  then
     payee has the option of extending the  re-payment of principal and interest
     as follows:

     In thirty-five  (35) monthly  installments  in the principal sum of Seventy
     Thousand  and No/100  Dollars  ($70,000.00),  and in one,  the last  (36th)
     monthly  installment for the entire  principal  balance due,  together with
     interest thereon at the rate of 18% per annum, calculated upon the reducing
     principal  balances  outstanding from time to time and added to and due and
     payable at the time of each such  monthly  installment  of  principal;  the
     first of such monthly  installments  of principal and interest shall be due
     and  payable  on the  1st  day of  June,  2001,  and  one of  such  monthly
     installments of principal and interest being due and payable on the 1st day
     of each month thereafter, respectively, until all are paid;





     Each  maker  and  endorser   waives  the  right  of  exemption   under  the
Constitution  and laws of Alabama,  and each maker and endorser  waives  demand,
protest,  and notice of protest,  and all  requirements  necessary  to hold them
liable as makers and endorsers.

     It  is  further  agreed  that  the  undersigned  shall  pay  all  costs  of
collection,  including  a  reasonable  attorney's  fee on  failure  to  pay  the
principal and interest of this note on the date due hereof.

     This note is to be construed according to the laws of the State of Alabama,
and  exclusive of venue for any lawsuit  arising from or out of this  Promissory
Note shall be in the Circuit Court of Mobile County, Alabama.

     This note is partially  secured by that  certain  Mortgage,  Assignment  of
Production,  Security Agreement and Financing Statement between Playa Minerals &
Energy, Inc., as Mortgagor and Parawon Corporation, as Mortgagee, dated July 21,
200 and recorded  July 25, 2000 with the County  Clerk of San Juan  County,  New
Mexico in Book 1305, Page 800.

     Upon  failure  to pay any  principal  and/or  interest  when due the entire
principal sum at the option of the holder, shall become due and payable. Failure
to exercise  this option shall not  constitute a waiver of the right to exercise
the same in the event of any subsequent default.

     This renewal  promissory note is made to renew that certain Promissory Note
dated  April 4,  2000,  executed  by Playa  Minerals & Energy,  Inc.  to Parawon
Corporation.



                                          VULCAN MINERALS & ENERGY, INC.
                                          formerly know as
                                          PLAYA Minerals & Energy, Inc.



                                          BY: /s/ John H. Ehrman, J.D. S.P.E.
                                              ----------------------------------
                                              John N. Ehrman, J.D. S.P.E.
                                              President