692 A.2d 623 Robert J. PETRILLA, Petitioner v. WORKMEN’S COMPENSATION APPEAL BOARD (PEOPLE’S NATURAL GAS), Respondent. Commonwealth Court of Pennsylvania.Submitted on Briefs July 26, 1996. Decided April 10, 1997. Appeal from the Workmen’s Compensation Appeal Board, No. A93-1338. Lawrence P. Lutz, Butler, for petitioner. Joseph Mack, III, Pittsburgh, for respondent. Before DOYLE and LEADBETTER, JJ., […]