339 A.2d 911 Workmen’s Compensation Appeal Board of the Commonwealth of Pennsylvania and Ruth Scally, Widow of Robert Scally, deceased, v. Commonwealth of Pennsylvania, Appellant. Commonwealth Court of Pennsylvania.Argued June 3, 1975 June 25, 1975. Workmen’s compensation — Occupational disease — Anthracosilicosis — The Pennsylvania Workmen’s Compensation Act, Act 1915, June 2, P.L. 736 — […]