288 A.2d 828 Gray v. Bethlehem Steel Company and Commonwealth. Commonwealth Court of Pennsylvania.Argued September 13, 1971 March 28, 1972. Workmen’s compensation — Occupational disease — The Pennsylvania Occupational Disease Act, Act 1939, June 21, P. L. 566 — Limitation of actions — Time of disability or death — Last exposure. 1. Disability or death […]