400 A.2d 918 Alma Dudnick, Petitioner v. Commonwealth of Pennsylvania, Workmen’s Compensation Appeal Board and Hansen-Young Paper Corp., Respondents. Commonwealth Court of Pennsylvania.Argued February 8, 1979 April 30, 1979. Workmen’s compensation — Heart attack — Causation — Medical testimony — Conflicting testimony — Depositions — Credibility — Findings of fact — Substantial evidence. 1. Unequivocal […]