
    435 A.2d 1308
    Ralston-Purina v. International Brotherhood of Electrical Workers, Appellants.
    Petition for Allowance of Appeal Denied Oct. 30, 1981.
    Argued December 4, 1980.
    Charles W. Johnston, Jr., for appellants; Jason S. Shapiro, did not file a brief on behalf of appellee.
    Before HESTER, CAVANAUGH and VAN der VOORT, JJ.
   Order affirmed.  