168 A.2d 567 Mignatti Appeal. Supreme Court of Pennsylvania.January 13, 1961. March 13, 1961. Municipalities — Zoning — Nonconforming existing use — Extension — Broadening scope of use — Special exception — Quarry and stone crushing plant — Adding bituminous concrete plant — Asphalt manufacturer. 1. Where land was being used for a quarry and […]