Mary Lango, Widow of Andrew F. Lango v. Director, Office of Workers' Compensation Programs, Respondent/party-In-Interest , 104 F.3d 573 ( 1997 )
in-the-matter-of-frank-kertesz-v-crescent-hills-coal-co-and-old-republic , 788 F.2d 158 ( 1986 )
Richardson v. Perales , 91 S. Ct. 1420 ( 1971 )