533 A.2d 188 Babcock Wilcox and Pacific Employers Insurance Company, Petitioners v. Workmen’s Compensation Appeal Board (Rollins), Respondents. Commonwealth Court of Pennsylvania.Argued October 8, 1987. November 9, 1987. Workers’ compensation — Loss of hearing — Scope of appellate review — Error of law — Findings of fact — Substantial evidence — Burden of proof — […]