
    358 A.2d 101
    W. R. Davies Mechanical Contractors, Inc. v. Dravo Corporation, Appellant.
    Argued April 16, 1976.
    Edward J. Whitfield, with him Parmelee, Miller, Welsh & Kratz, for appellant; Frank J. Kernan, with him Plowman and Spiegel, for appellee.
   Judgment affirmed.  