(concurring specially) — I concur except for those portions of the majority opinion which would require common liability as distinguished from common fault plus proximate cause, freedom from contributory negligence and damages. See dissent in Iowa Power and Light Co. v. Abild Construction Co., 259 Iowa 314, 144 N.W.2d 303, it being conceded, however, the majority opinion in Iowa Power and Light Co. v. Abild Construction Co., supra, is binding on the trial court in this ease.
Rawlings and Mason, JJ., join in this special concurrence.