
    445 A.2d 227
    Conemaugh Coal etc. v. Demag Baumaschinen. Appeal of Demag Baumaschinen GmbH and Demag Material Handling Corp.
    Argued May 21, 1981.
    David G. Ries, for Baumaschinen, appellant;
    Kim R. Bobrowsky, for Conemaugh, appellees;
    Richard C. Lane, for Pittsburgh Contractors, appellee;
    Carl Harvison, for Caterpillar Tractor, participating party.
    Before HESTER, POPOVICH and DiSALLE, JJ.
   Order affirmed.

DiSALLE, J., did not participate in the consideration or decision of this case.  