288 A.2d 564 Thatch v. Superior Zinc Company, et al. Commonwealth Court of Pennsylvania.Argued February 10, 1972 March 6, 1972. Workmen’s compensation — The Pennsylvania Workmen’s Compensation Act, Act 1915, June 2, P. L. 736 — Final receipt — Mistake of fact — Pleadings — Findings of fact — Remand — Appealable order — Interlocutory […]