454 A.2d 227 George Jerokovitch, Petitioner v. Workmen’s Compensation Appeal Board (Gateway Coal Co.), Respondents. Commonwealth Court of Pennsylvania.Argued October 6, 1982 January 13, 1983. Workmen’s compensation — Scope of appellate review — Medical testimony. 1. It is for the referee in workmen’s compensation cases to determine the credibility and weight of the evidence, and […]