Exhibit 99.3

                               SECOND AMENDMENT TO
               AMENDED AND RESTATED SUBORDINATED CREDIT AGREEMENT

     THIS  SECOND  AMENDMENT  TO  AMENDED  AND RESTATED CREDIT AGREEMENT (herein
called this "Amendment") is made as of the 28th day of May, 2004, by and among
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BRIGHAM  OIL  &  GAS,  L.P.,  a  Delaware limited partnership  (the "Borrower"),
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BRIGHAM  EXPLORATION  COMPANY,  a  Delaware corporation ("Brigham Exploration"),
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BRIGHAM,  INC.,  a Nevada corporation (the "General Partner"), the lenders party
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to  the  Agreement  from  time  to  time  (the "Lenders"), and THE ROYAL BANK OF
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SCOTLAND plc, as Agent (in such capacity, the "Agent").
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                              W I T N E S S E T H:

     WHEREAS,  Borrower,  Brigham Exploration and General Partner (collectively,
the "Credit Parties"), Agent, and Lenders have entered into that certain Amended
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and Restated Subordinated Credit Agreement dated as of March 21, 2003, which was
amended  by  that  certain  First Amendment to Amended and Restated Subordinated
Credit  Agreement  dated  as  of  December  9, 2003 (collectively, the "Original
                                                                        --------
Agreement"),  for  the purposes and consideration therein expressed, pursuant to
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which  Lenders  made and became obligated to make loans to Borrower, which loans
are  unconditionally  and  irrevocably  guaranteed  by  Brigham  Exploration and
General  Partner  (collectively,  the  "Guarantors"),  all  as therein provided;
                                        ----------

     WHEREAS,  Credit  Parties,  Agent, and Lenders desire to amend the Original
Agreement  for  the  purposes  described  herein;

     NOW,  THEREFORE,  in consideration of the premises and the mutual covenants
and  agreements contained herein and in the Original Agreement, in consideration
of  the  loans which may hereafter be made by Lenders to Borrower, and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto do hereby agree as follows:

                                   ARTICLE I.
                           DEFINITIONS AND REFERENCES

     Section  1.1.     Defined  Terms.  Unless the context otherwise requires or
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unless  otherwise  expressly  defined  herein, the terms defined in the Original
Agreement shall have the same meanings whenever used in this Amendment.  As used
herein, the following terms shall have the following meanings:

     "Amendment"  means  this  Second  Amendment  to  Amended  and  Restated
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Subordinated  Credit  Agreement.

     "Credit  Agreement"  means  the  Original  Agreement  as  amended  by  this
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Amendment.



                                   ARTICLE II.
                                   AMENDMENTS

     Section  2.1.     Definitions.
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     The  definition  of  "Total  Debt" contained in Section 1.1 of the Original
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Agreement is hereby deleted in its entirety and replaced by the following:

          "Total  Debt"  means  all  Debt  of  the Borrower and its Consolidated
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Subsidiaries;  excluding  however,  any  redeemable  preferred  stock  that  is
permitted to be issued pursuant to Section 6.02(c).

     Section 2.2.     Calculated Total NPV to Total Debt Ratio.  Section 6.25(b)
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of  the Original Agreement is hereby deleted in its entirety and replaced by the
following:

          "(b)  Upon  (i)  any  change  to  Calculated  Total  NPV pursuant to a
     Scheduled  Redetermination  or  an  Interim  Redetermination  or  (ii)  the
     incurrence  of  any  Debt  (other  than  redeemable preferred stock that is
     permitted  to be issued pursuant to Section 6.02(c)) by the Borrower or any
     of  its  consolidated  Subsidiaries, the Borrower will promptly, but in any
     event  within fifteen (15) days after any such event, deliver a certificate
     of  the  chief  financial  officer of the General Partner setting forth the
     Total  Debt of the Borrower and the Calculated Total NPV, both prior to and
     after  giving  effect  to  such  event,  and  demonstrating compliance with
     Section  6.25(a),  provided  that  no such certificate need be delivered in
     connection  with  any  borrowing  under  the  Senior  Credit  Agreement  if
     immediately  following  such  borrowing  the Borrower remains in compliance
     with  the  covenant  set  out  in  Section  6.25(a)."

                                  ARTICLE III.
                  CONDITIONS TO EFFECTIVENESS OF THE AMENDMENT

     Section  3.1.     Effective Date.  This Amendment shall become effective as
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of  the  date  first  above  written  when  Agent shall have received all of the
following:

          (a)     this Amendment, duly authorized, executed and delivered by the
Credit  Parties,  Agent, and each Lender, and in form and substance satisfactory
to  Agent;

          (b)  copies,  certified  as  of  the  date  of  this  Agreement  by  a
Responsible  Officer  or the secretary or an assistant secretary of the Borrower
of  (A)  the  resolutions  of  the  applicable  governing  body  of the Borrower
approving  this  Amendment, (B) the organizational documents of the Borrower (to
the  extent  the  same  have  changed  since  copies  thereof  were delivered in
connection  with the Original Agreement), and (C) all other documents evidencing
other  necessary  corporate  action  and  governmental  approvals,  if any, with
respect  to  this  Amendment;

          (c)  certificates  of  a  Responsible  Officer  or the secretary or an
assistant  secretary of the Borrower certifying the names and true signatures of
the  officers  of  the  Borrower  authorized  to  sign  this  Amendment;

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          (d)     copies,  certified  as  of  the  date  of  this Agreement by a
Responsible Officer or the secretary or an assistant secretary of each Guarantor
of  (A)  the  resolutions  of  the  applicable  governing body of such Guarantor
approving  the Amendment, (B) the organizational documents of such Guarantor (to
the  extent  the  same  have  changed  since  copies  thereof  were delivered in
connection  with the Original Agreement), and (C) all other documents evidencing
other  necessary  corporate  action  and  governmental  approvals,  if any, with
respect  to  this  Amendment;

          (e)     a  certificate  of  the secretary or an assistant secretary of
each  Guarantor  certifying  the  names  and true signatures of officers of such
Guarantor  authorized  to  sign this Amendment, the Security Instruments and the
other  Loan  Documents  to  which  such  Guarantor  is  a  party;

          (f)  payment  of the reasonable fees and disbursements of Chadbourne &
Parke, LLP relating to this Amendment as provided in Section 10.04 of the Credit
Agreement  (provided  that if such fees and disbursements have not been invoiced
to  the  Borrower at least one day prior to the delivery of this Amendment, such
payment  will  not  be  a condition to the effectiveness hereof and the Borrower
will pay such fees and disbursements promptly after receipt of such an invoice);
and

          (g)  such  other  documents  as  Agent  may  reasonably  request.

                                   ARTICLE IV.
                                  MISCELLANEOUS

     Section  4.1.     Ratification  of  Agreements.  The  Original Agreement as
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hereby amended is hereby ratified and confirmed in all respects.  Without in any
way  modifying  or  limiting  the  foregoing, each of the undersigned Guarantors
hereby  (a)  consents  to  the provisions of this Amendment and the transactions
contemplated herein, and (b) ratifies and confirms its guaranty obligations made
by  it  in  favor  of  Agent  for  the benefit of each Lender pursuant to and in
accordance  with  Article  VIII  of  the  Credit  Agreement, and agrees that its
obligations  and  covenants thereunder are unimpaired hereby and shall remain in
full  force  and  effect.  Any  reference  to  the  Credit  Agreement  in  any
Subordinated  Loan  Document  shall  be deemed to be a reference to the Original
Agreement  as  hereby  amended.  The Subordinated Loan Documents, as they may be
amended  or affected by this Amendment, are hereby ratified and confirmed in all
respects. The execution, delivery and effectiveness of this Amendment shall not,
except  as expressly provided herein, operate as a waiver of any right, power or
remedy  of  Lenders  under  the  Credit Agreement, the Subordinated Note, or any
other Subordinated Loan Document nor constitute a waiver of any provision of the
Credit  Agreement,  the  Subordinated  Note,  or  any  other  Subordinated  Loan
Document.

     Section  4.2.     Survival of Agreements.  All representations, warranties,
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covenants  and  agreements  of  the  Credit  Parties  herein  shall  survive the
execution  and  delivery of this Amendment and the performance hereof, including
without  limitation  the  making,  granting  or maintenance of the Advances, and
shall  further  survive  until  all  of the Subordinated Obligations are paid in
full.  All  statements and agreements contained in any certificate or instrument
delivered  by  any  Credit  Party hereunder or under the Credit Agreement to any
Lender  shall  be


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deemed  to  constitute  representations and warranties by, and/or agreements and
covenants  of,  such  Credit  Party  under  this  Amendment and under the Credit
Agreement.

     Section  4.3.     Subordinated  Loan  Documents.  This  Amendment  is  a
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Subordinated  Loan  Document,  and  all  provisions  in  the  Credit  Agreement
pertaining to Subordinated Loan Documents apply hereto.

     Section  4.4.     GOVERNING  LAW.  THIS AMENDMENT SHALL BE GOVERNED BY, AND
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CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

     Section  4.5.     Counterparts.  This  Amendment may be separately executed
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in  counterparts  and  by the different parties hereto in separate counterparts,
each  of  which  when so executed shall be deemed to constitute one and the same
Amendment.

     THIS  AMENDMENT  AND  THE  OTHER  SUBORDINATED LOAN DOCUMENTS REPRESENT THE
FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF
PRIOR,  CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE
NO  UNWRITTEN  ORAL  AGREEMENTS  AMONG  THE  PARTIES  HERETO.

                         [Signatures on Following Page]


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     IN  WITNESS  WHEREOF, this Amendment is executed as of the date first above
written.


                                          BRIGHAM OIL & GAS, L.P.

                                          By: /s/ Eugene B. Shepherd, Jr.
                                               --------------------------
                                               Name: Eugene B. Shepherd, Jr.
                                               Title: Executive Vice President &
                                                      Chief Financial Officer


                                          BRIGHAM EXPLORATION COMPANY

                                          By: /s/ Eugene B. Shepherd, Jr.
                                               --------------------------
                                               Name: Eugene B. Shepherd, Jr.
                                               Title: Executive Vice President &
                                                      Chief Financial Officer


                                          BRIGHAM, INC.

                                          By: /s/ Eugene B. Shepherd, Jr.
                                               --------------------------
                                               Name: Eugene B. Shepherd, Jr.
                                               Title: Executive Vice President &
                                                      Chief Financial Officer


                                                 THE ROYAL BANK OF SCOTLAND PLC,
                                                 as Agent and Lender

                                          By: /s/ P.R. Ballard
                                               --------------------------
                                               Name: P.R. Ballard
                                               Title: Senior Vice President


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