345 A.2d 601 Harold Richard DUNN, Appellant, v. MERCK COMPANY, INC., et al., Appellees. Supreme Court of Pennsylvania.Argued May 8, 1975. Decided October 3, 1975. Appeal from the Workmen’s Compensation Board. Page 442 [EDITORS’ NOTE: THIS PAGE CONTAINS HEADNOTES. HEADNOTES ARE NOT AN OFFICIAL PRODUCT OF THE COURT, THEREFORE THEY ARE NOT DISPLAYED.] Page 443 […]