
    452 A.2d 1083
    McFetridge, Appellant v. Air Products & Chemicals Co.
    Petition for Allowance of Appeal Denied March 18, 1983.
    Argued June 16, 1982.
    Daniel J. Weis, for appellant;
    Av-rum Levicoff, for Air Products, appellee;
    Daniel F. Cusick, for Westinghouse, appellee;
    Charles Kirshner, for Welding & Steel, appellee.
    Before BROSKY, JOHNSON and MONTGOMERY, JJ.
   The judgment of the lower court is hereby affirmed.  