
    433 A.2d 135
    Obert-Thorn, Appellants v. Fred Betz and Sons, Inc.
    Argued September 9,1980.
    Daniel L. Thistle, for appellant; Marjorie C. Lawrence, for appellee.
    Before SPAETH, HESTER and CAVANAUGH, JJ.
   Order affirmed.

CAVANAUGH, J., concurred in the result.  