NATIONAL LABOR RELATIONS BOARD, Petitioner v. UNITED STATES STEEL CORPORATION (AMERICAN BRIDGE DIVISION) and Local Union 542, International Union of Operating Engineers, AFL-CIO, Respondents. No. 13011.United States Court of Appeals, Third Circuit.Argued March 8, 1960. Decided April 13, 1960. Supplemental Opinion May 17, 1960. Page 897 Duane Beeson, Washington, D.C. (Stuart Rothman, Gen. Counsel, Thomas […]