DISTRICT 50, UNITED MINE WORKERS OF AMERICA, Petitioner, v. NATIONAL LABOR RELATIONS BOARD, Respondent. NATIONAL LABOR RELATIONS BOARD, Petitioner, v. BOWMAN TRANSPORTATION, Inc., Respondent. Nos. 12887, 12950.United States Court of Appeals, District of Columbia Circuit.Argued April 9, 1956. Decided October 4, 1956. Page 586 Mr. E. Crampton Harris, Birmingham, Ala., with whom Messrs. Yelverton Cowherd […]