437 A.2d 790 Rockwell International, Petitioner v. Commonwealth of Pennsylvania, Workmen’s Compensation Appeal Board and John B. Nagle, Respondents. Commonwealth Court of Pennsylvania.Argued October 9, 1981 December 9, 1981. Workmen’s compensation — Notice of injury — Credibility — Conflicting evidence — Medical testimony. 1. In a workmen’s compensation case questions of credibility are for the […]