Exhibit 24


                                POWER OF ATTORNEY








                                                                      Exhibit 24




                      ATLAS AMERICA PUBLIC #12-2003 PROGRAM
                                POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned officers and/or
directors of Atlas Resources, Inc., a Pennsylvania corporation which has filed
with the Securities and Exchange Commission, under the provisions of the
Securities Act of 1933, as amended, a Registration Statement on Form S-1
relating to certain securities of Atlas America Public #12-2003 Program,
constitutes and appoints Jack L. Hollander, his/her true and lawful attorney-
in-fact, with full power of substitution and resubstitution and with full power
on the part of said attorney-in-fact to act without any other person, for
him/her and in his/her name, place and stead, in any and all capacities, to sign
such Registration Statement, and any and all amendments, including pre-effective
amendments and post-effective amendments thereto, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission and all states and other jurisdictions
wherein such Registration Statement and amendments thereto may be filed for
securities compliance measures, granting unto said attorney- in-fact and agent,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he/she might or could do in person, hereby ratifying and
confirming all that said attorney-in-fact and agent, or his/her substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.


Dated: 5/22, 2003          /s/ Freddie M. Kotek
                           _____________________________________________________
                           Freddie M. Kotek, Chairman of the Board of Directors,
                           Chief Executive Officer and President

Dated: May 20, 2003        /s/ Frank P. Carolas
                           _____________________________________________________
                           Frank P. Carolas, Executive Vice President -
                           Land and Geology and a Director

Dated: May 20, 2003        /s/ Jeffrey C. Simmons
                           _____________________________________________________
                           Jeffrey C. Simmons, Executive Vice President -
                           Operations and a Director

Dated: 5/20, 2003          /s/ Nancy J. McGurk
                           _____________________________________________________
                           Nancy J. McGurk, Senior Vice President,
                           Chief Financial Officer and Chief Accounting Officer