
    Butler Area Sewer Authority, Appellant, v. Rock et ux., Appellants.
    Argued November 8, 1971.
    
      William C. Robinson, with him Henninger & Robinson, for plaintiff appellants; Frank P. Krizner, with him McCandless, Chew & Krizner, for defendant appellants.
   Orders affirmed.

Spaulding, J., absent.  