440 A.2d 1275 Michele Mancini, Petitioner v. Commonwealth of Pennsylvania, Workmen’s Compensation Appeal Board and Saldutti Belfatti, Respondents. Commonwealth Court of Pennsylvania.Argued December 18, 1981 February 9, 1982. Workmen’s compensation — Petition to modify — Burden of proof — Scope of appellate review — Violation of constitutional rights — Error of law — Findings of […]