405 A.2d 1039 Fletcher B. Fisher and United States Steel Corporation v. Commonwealth of Pennsylvania. United States Steel Corporation, Appellant. Commonwealth Court of Pennsylvania. September 10, 1979. Workmen’s compensation — The Pennsylvania Occupational Disease Act, Act 1939, June 21, P.L. 566 — Multiple employers — Silicosis — Changes in corporate structure. 1. Provisions of The […]