The judgment of the District Court, mandated at 223 F.Supp. 435, 1. c. 438, is affirmed on the basis of the District Court’s opinion there set forth; and this Court’s opinions in Continental Casualty Company v. United States for Use and Benefit of Robertson Lumber Company (8 Cir. 1962), 305 F.2d 794, cert. den. 371 U.S. 922, 83 S.Ct. 290, 9 L.Ed.2d 231; Continental Casualty Company v. Allsop Lumber Co., Inc. (8 Cir. 1964), 336 F.2d 445, cert. den. 85 S.Ct. 662 (1965) ; Koppers Company v. Continental *959Casualty Company (8 Cir. 1964), 337 F.2d 499; and Missouri-Illinois Tractor & Equipment Co. v. D & L Const. Co. & Associates et al. (8 Cir. 1964), 337 F.2d 507.