39 L.Ed.2d 530 94 S.Ct. 1186 415 U.S. 486 UNITED STATES, Appellant,v.GENERAL DYNAMICS CORPORATION et al. No. 72?402. Argued Dec. 5, 1973. Decided March 19, 1974. Syllabus Material Service Corp., a deep-mining coal producer, and its successor, appellee General Dynamics Corp., acquired, through stock purchases, control of appellee United Electric Coal Companies, a strip-mining coal […]