348 A.2d 169 Ralph Scobbo v. Workmen’s Compensation Appeal Board of the Commonwealth of Pennsylvania v. Heppenstall Company and Commonwealth of Pennsylvania. Heppenstall Company and Pennsylvania Manufacturers’ Association Insurance Company, Insurance Carrier, Appellants. Commonwealth Court of Pennsylvania.Argued October 30, 1975 December 1, 1975. Page 110 Workmen’s compensation — The Pennsylvania Occupational Disease Act, Act 1939, […]