423 A.2d 1135 Asten Hill Manufacturing Co., Petitioner v. Commonwealth of Pennsylvania, Workmen’s Compensation Appeal Board and Helen Adams, Respondents. Commonwealth Court of Pennsylvania. January 7, 1981. Workmen’s compensation — Appeal — Occupational disease — Disability — Pre-existing condition — Pulmonary asbestosis. 1. In a workmen’s compensation case, issues not raised before the referee or […]