Kachinski v. Workmen's Compensation Appeal Board , 516 Pa. 240 ( 1987 )
Rettinger v. WCAB (AM. CAN CO.). , 103 Pa. Commw. 595 ( 1987 )
Universal Cyclops Steel Corp. v. Krawczynski , 9 Pa. Commw. 176 ( 1973 )