The judgment of the District Court is affirmed upon the authority of Rogers Cartage Co. v. Reynolds, 6 Cir., 166 F.2d 317; Seese v. Bethlehem Steel Co., 4 Cir., 168 F.2d 58; Atallah v. B. H. Hubbert & Son, 4 Cir., 168 F.2d 993, certiorari denied Cingrigani v. B. H. Hubbert & Son, 69 S.Ct. 138; Battaglia v. General Motors Corp., 2 Cir., 169 F.2d 254, certiorari denied 69 S.Ct. 236; Darr v. Mutual Life Ins. Co., 2 Cir., 169 F.2d 262, certiorari denied 69 S.Ct. 166; Fisch v. General Motors Corp., 6 Cir., 169 F.2d 266, certiorari denied 69 S.Ct. 405.