AMERICAN ZINC CO., Wilbur Ellis Co., Inc., et al., Plaintiffs-Appellees-Cross Appellants, v. Jacob A. FOSTER et al., Defendants-Appellees, v. The INGALLS SHIPBUILDING DIVISION OF LITTON SYSTEMS, INC., Third-Party Plaintiff-Appellant-Cross Appellee, v. VERA CRUZ CIA. NAVIERA, S.A., etc., et al., Third-Party Defendants-Appellees. No. 29890.United States Court of Appeals, Fifth Circuit. May 10, 1971. Frank C. Allen, […]