713 A.2d 627 SAPP ROOFING COMPANY, INC., Appellant, v. SHEET METAL WORKERS’ INTERNATIONAL ASSOCIATION, LOCAL UNION NO. 12, and North Hills School District and W. David Hall, as records custodian for North Hills School District, Appellees. Supreme Court of Pennsylvania.Argued September 18 1996. Decided June 24, 1998. Appeal from the Commonwealth Court, No. 1501 C.D. […]