Graham v. Hillman Coal & Coke Co. ( 1936 )
Parks v. Winkler ( 1962 )
Lingle v. Lingle Coal Co. ( 1964 )
Petrulo v. M. O'Herron Co. ( 1936 )
McGee v. Y. O. Coal Co. ( 1935 )
Schach v. Hazle Brook Coal Co. ( 1944 )
Washko v. Ruckno, Inc. ( 1956 )