DEAN HELLER                                           Entity #
Secretary of State                                    C21012-2000
202 North Carson St.                                  Document Number
Carson City, NV 89701-4299                            20050360490-69
(775) 684-5708 Website: secretaryofstate.biz          Date Filed
                                                      8/30/2005 10:35:11 PM
                                                      In the office of
                                                      /s/ Dean Heller
                                                      Dean Heller
                                                      Secretary of State

                            Certificate of Amendment
                       (PURSUANT TO NRS 78.385 and 78.390)


              Certificate of Amendment to Articles of Incorporation
                         For Nevada Profit Corporations
          (Pursuant to NRS 78.385 and 78.390 - After Issuance of Stock)


1.       Name of Corporation: Green Mt. Labs., Inc.

2.       The articles have been amended as follows (provide article numbers,  if
         available):

         Article #1 - is amended to read:

                  "The name of the corporation is Hydrogen Engine Center, Inc."

         Article #3 - is amended by adding the following paragraph:

                  "SHARES: The number of shares the corporation is authorized to
                  issued is 100,000,000 shares of common stock, par value $0.001
                  per share, and 10,000,000 shares of preferred stock, par value
                  $0.001 per share.  Preferred shares may be issued from time to
                  time in one or more series in the  discretion  of the board of
                  directors. The board has the authority to establish the number
                  of shares to be included in each such  series,  and to fix the
                  designation,  powers,  preferences and rights of the shares of
                  each  such  series  and the  qualifications,  limitations  and
                  restrictions thereof."

3.  The  vote by  which  the  stockholders  holding  shares  in the  corporation
entitling  them to  exercise at least a majority  of the voting  power,  or such
greater  proportion of the voting power as may be required in the case of a vote
by classes or series, or as may be required by the provisions of the articles of
incorporation  have voted in favor of the amendment is:  832,180  shares (82.7%)
voting for (by written consent) and zero shares voting against.

4. Officer Signature (Required):

  /s/ G. Williams
------------------------------------
          Geoff Williams, President

* If any proposed amendment would alter or change any preference or any relative
or other  right  given to any class or series of  outstanding  shares,  then the
amendment  must be approved by the vote,  in  addition to the  affirmative  vote
otherwise  required,  of the  holders of shares  representing  a majority of the
voting power of each class or series  affected by the  amendment  regardless  of
limitations or restrictions on the voting power thereof.

IMPORTANT:  Failure to include any of the above information and remit the proper
fees may cause this filing to be rejected.