SEC File No. 33-74154


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                         POST EFFECTIVE AMENDMENT NO. 2

                                    FORM S-8

               REGISTRATION STATEMENT UNDER SECURITIES ACT OF 1933

                                U.S. ENERGY CORP.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

              Wyoming                                      83-0205516
- --------------------------------------------     -------------------------------
   (State or other jurisdiction                        (I.R.S. Employer
  incorporating or organization)                       Identification No.)

           877 North 8th West,
           Riverton, Wyoming                               82501
- --------------------------------------------     -------------------------------
(Address of Principal Executive Offices)                (Zip Code)

        1998 STOCK OPTION PLAN (F/K/A "1989 INCENTIVE STOCK OPTION PLAN")
- --------------------------------------------------------------------------------
                              (Full title of plan)

            Daniel P. Svilar, 877 North 8th West, Riverton, WY 82501
- --------------------------------------------------------------------------------

                                 (307) 856-9271
- --------------------------------------------------------------------------------

Approximate  date of  commencement  of proposed  sale to the public:  As soon as
practicable after this registration statement is declared effective.

If the securities  being registered on this Form are being offered in connection
with the  formation of a holding  company and there is  compliance  with General
instruction G, check the following box. [ ]


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                         Calculation of Registration Fee

Title of each                            Proposed         Proposed
class of                                  maximum          maximum          Amount
securities                Amount         offering         aggregate           of
to be                      to be           price          offering          regis.
registered              registered*      per share          price             fee
- -----------------       -----------     -----------     -------------      ---------

                                                               
Common stock,           1,825,000       $2.875(2)        $5,246,875(3)     $1,312.72
par value               shares*(1)
$0.01 per share

Totals*                 1,825,000                        $5,246,875(3)     $1,312.72
                        shares


*    Does  not  include  the  925,000  shares  registered  for the  Registrant's
     Restricted  Stock Bonus Plan or the Outside  Directors  Compensation  Plan,
     previously  registered  on Form  S-8 in 1996  and 1994  (see  footnotes  to
     calculation of fees in such filings).
(1)  This filing covers the  Registrant's  amended 1989  Incentive  Stock Option
     Plan (now the "1998 Stock Option Plan"), by increasing the number of shares
     issuable  under  the  Plan  by  1,825,000  to the  current  Plan  limit  of
     2,750,000.
(2)  Based on the maximum per share option  exercise price for options issued to
     date.
(3)  Aggregate  offering price is based on total options  multiplied by ($2.875)
     the per share  option  exercise  price.  Pursuant  to Rule  457(h)(1),  the
     registration fee is calculated on the exercise price for the option.


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                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 3.  Incorporation of Documents by References.

     Registrant  hereby  incorporates  the  documents  listed in (a) through (c)
below by reference  into this Form S-8  registration  statement.  All  documents
subsequently filed by registrant pursuant to sections 13(a), 13(d), 14 and 15(d)
of the Securities  Exchange Act of 1934, as amended  ("Exchange Act"),  prior to
the filing of a  post-effective  amendment  which  indicates that all securities
offered  have been  sold or which  deregisters  all  securities  then  remaining
unsold,  shall be deemed to be  incorporated  by reference  in the  registration
statement and to be part thereof from the date of filing such documents.

     (a)  Registrant's  latest annual report on Form 10-K (for fiscal year ended
May 31, 2000), and  registrant's  proxy statement for annual meeting in December
2000.

     (b) All other  reports  filed  pursuant  to  Section  13(a) or 15(d) of the
Exchange Act since the end of the fiscal year covered by the registrant document
referred to in (a) above.

     (c)  The  registrant's  class  of  common  stock  is  described  in the S-4
registration  statement filed with the Commission on November 29, 1993 (SEC File
No.  33-72280),  including any  amendment  which may be filed for the purpose of
updating such description.

Item 4.   Description of Securities.

     Not applicable (see Item 3(c) above).

Item 5.   Interests of Named Experts and Counsel.

     Not applicable.

Item 6.   Indemnification of Directors and Officers.

     The Wyoming  Business  Corporation  Act ("BCA"),  W.S.  17-16-850 et. seq.,
provides for indemnification of the registrant's officers, directors, employees,
and  agents  against  liabilities  which  they may incur in such  capacities.  A
summarization of circumstances  in which such  indemnification  may be available
follows, but is qualified by reference to registrant's Articles of Incorporation
and the text of the statute.

     In general, any officer,  director,  employee,  or agent may be indemnified
against expenses, fines, settlements,  or judgments arising in connection with a
legal  proceeding  to  which  such  person  is a  party  as  a  result  of  such
relationship,  if that person's actions were in good faith, were believed by him
or her to in (or at least not opposed to)  registrant's  best interests,  and in
the case of any criminal

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proceeding,  he or she had no reasonable cause to believe his or her conduct was
unlawful.  Unless such person is  successful  upon the merits in such an action,
indemnification  may be awarded  only after a  determination  by decision of the
board of directors (by directors not at the time parties to the  proceeding)  or
by majority  shareholder vote (excluding  shares held or controlled by directors
who are at the time parties to the  proceeding),  or by opinion of special legal
counsel.

     The circumstances under which  indemnification  would be made in connection
with an action  brought on behalf of the  registrant  are  generally the same as
stated  above,  except that  indemnification  is permitted  only for  reasonable
expenses.

     In addition,  registrant has statutory  authority to purchase  insurance to
protect its officers,  directors,  employees, and agents against any liabilities
asserted  against  them,  or incurred in  connection  with their service in such
capacities. Further, registrant may advance or reimburse funds to a director who
is a party to a proceeding,  for reasonable expenses incurred in connection with
a proceeding.

Item 7.   Exemption from Registration Claimed.

     Not applicable.

Item 8.   Exhibits.

          Exhibit No.     Description                                  Page No.
          -----------     -----------                                  --------

              4.2         1998 Stock Option Plan                            7

              4.2(a)      Amendment No. 1 to 1998 Stock Option Plan        17

Item 9.   Undertakings.

     The registrant hereby undertakes:

     (a)(1) To file,  during any period in which offers or sales are being made,
a post-effective amendment to this registration statement.

     (iii) To  include  any  material  information  with  respect to the plan of
distribution  not  previously  disclosed  in the  registration  statement or any
material change to such information in the registration statement.

     (a)(2)  That,  for the  purpose  of  determining  any  liability  under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.


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     (a)(3) To remove from  registration by means of a post-effective  amendment
any of the securities being registered which remain unsold at the termination of
this offering.

     (b) That,  for purposes of determining  any liability  under the Securities
Act of 1933, each filing of the  registrant's  annual report pursuant to Section
123(a) or 15(d) of the Securities  Exchange Act of 1934 that is  incorporated by
reference  in the  registration  statement  relating to the  securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona offering thereof.

     (h) Insofar as indemnification for liabilities arising under the Securities
Act  of  1933,  as  amended,  may  be  permitted  to  directors,  officers,  and
controlling  persons of the registrant,  the registrant has been advised that in
the opinion of the Securities and Exchange  Commission,  such indemnification is
against public policy as expressed in the Act, and is, therefore, unenforceable.

     In the event  that a claim for  indemnification  against  such  liabilities
(other than the  payment by the  registrant  of  expenses  incurred or paid by a
director,  officer,  or controlling person of the registrant in the successfully
defense of any action suit or proceeding) is asserted by such officer, director,
or controlling  person in connection with the securities being  registered,  the
registrant  will,  unless in the  opinion  of its  counsel  the  matter has been
settled by controlling precedent,  submit to a court of appropriate jurisdiction
the question of whether such  indemnification  by it is against public policy as
expressed  in the act and will be  governed  by the final  adjudication  of such
issue.



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                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the registrant
has duly caused this Post Effective Amendment No. 2 to its Form S-8 Registration
Statement to be signed on its behalf by the undersigned,  duly authorized in the
City of Riverton, WY on May 22, 2001.

                                  U.S. ENERGY CORP.
                                  (Registrant)

Date: May 22, 2001                By:            /s/ Keith Larsen
                                           -------------------------------------
                                           KEITH LARSEN, President

         In accordance with the requirements of the Securities Act of 1933, this
Post Effective Amendment No. 2 to Registration  Statement on Form S-8 was signed
by the following persons in the capacities and on the dates stated.

Date: May 22, 2001                By:          /s/  John L. Larsen
                                           -------------------------------------
                                           JOHN L. LARSEN, Chairman,
                                           CEO and Director

Date: May 22, 2001                By:          /s/  Keith Larsen
                                           -------------------------------------
                                           JOHN L. LARSEN,
                                           President and Director

Date: May 22, 2001                By:          /s/  Harold F. Herron
                                           -------------------------------------
                                           HAROLD F. HERRON, Director

Date: May __, 2001                By:
                                           -------------------------------------
                                           DON C. ANDERSON, Director

Date: May __, 2001                By:
                                           -------------------------------------
                                           DAVID W. BRENMAN, Director

Date: May 22, 2001                By:          /s/  Nick Bebout
                                           -------------------------------------
                                           NICK BEBOUT, Director

Date: May 22, 2001                By:          /s/  H. Russell Fraser
                                           -------------------------------------
                                           H. RUSSELL FRASER, Director

Date: May 22, 2001                By:          /s/ Robert Scott Lorimer
                                           -------------------------------------
                                           ROBERT SCOTT LORIMER,
                                           Treasurer and Chief Financial Officer


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