As filed with the Securities and Exchange Commission on February 10, 1998 Registration No. 333-31681 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 -------------------------------------------------- POST-EFFECTIVE AMENDMENT NO. 1 TO FORM SB-2 REGISTRATION STATEMENT Under The Securities Act of 1933 -------------------------------------------------- ATLAS-ENERGY FOR THE NINETIES-PUBLIC #6 LTD. (Exact name of Registrant as Specified in its Charter) Pennsylvania 1311 23-2888337 (State of Organization) (Primary Standard Industrial(IRS Classification Number) Employer Idfication Number) 311 Rouser Road Moon Township, Pennsylvania 15108 (412) 262-2830 (Address and Telephone Number of Principal Executive Offices and Principal Place of Business) --------------------------------------------------------- James R. O'Mara, President Atlas Resources, Inc. 311 Rouser Road, Moon Township, Pennsylvania 15108 (412) 262-2830 (Name, Address and Telephone Number of Agent for Service) Copies to: Wallace W. Kunzman, Jr., Esq. James R. O'Mara Kunzman & Bollinger, Inc. Atlas Resources, Inc. 5100 N. Brookline, Suite 600 311 Rouser Road Oklahoma City, Oklahoma 73112 Moon Township, PA 15108 ============================================================================= Page 2 DEREGISTRATION The undersigned hereby removes from registration 8.385 Units ("Units means the Limited Partner interests and the Investor General Partner interests offered to prospective Participants in the Partnership) of the Registrant which remained unsold at the termination of the offering. SIGNATURES In accordance with the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form SB-2 and has duly caused this Post-Effective Amendment No. 1 to the Form SB-2 Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized, in Moon Township, Pennsylvania, on the 10 day of February, 1998. ATLAS-ENERGY FOR THE NINETIES- PUBLIC #6 LTD. (Registrant) By: Atlas Resources, Inc. Managing General Partner James R. O'Mara and Bruce M. Wolf, By: /s/ James R. O'Mara pursuant to the Registration Statement, James R. O'Mara, have been granted Power of Attorney and are President, CEO and Director signing on behalf of the names shown below, in the capacities indicated. By: /s/ Bruce M. Wolf Bruce M. Wolf, General Counsel, Secretary and Director In accordance with the requirements of the Securities Act of 1933, this Post-Effective Amendment No. 1 to Form SB-2 Registration Statement has been signed by the following person in the capacities and on February 10, 1998. Signature Title Charles T. Koval : Chairman of the Board and a Director James R. O'Mara : President, Chief Executive Officer and a Director Bruce M. Wolf : General Counsel, Secretary and a Director Donald P. Wagner : Vice President of Operations James J. Kritzo : Vice President of the Land Department Tony C. Banks : Vice President of Finance and Chief Financial Officer Frank P. Carolas : Vice President of Geology Barbara J. Krasnicki: Vice President of Administration Joseph R. Sadowski : Director ============================================================================