0000898822-10-000782 DEFA14A 2 20101208 20101208 20101208 ATLAS ENERGY, INC. 0001279228 4922 510404430 DE 1231 DEFA14A 34 001-32169 101238699 WESTPOINTE CORPORATE CENTER ONE 1550 CORAOPOLIS HEIGHTS RD. 2ND. FLOOR MOONTOWNSHIP PA 15108 412-262-2830 WESTPOINTE CORPORATE CENTER ONE 1550 CORAOPOLIS HEIGHTS RD. 2ND. FLOOR MOONTOWNSHIP PA 15108 ATLAS AMERICA INC 20040209 DEFA14A 1 atlas_8k.htm EX-2.1 2 ex2_1.htm