453 U.S. 322 453 U.S. 322 101 S.Ct. 2789 69 L.Ed.2d 672 NATIONAL LABOR RELATIONS BOARD, Petitioner,v. AMAX COAL COMPANY, A DIVISION OF AMAX, INC., et al. UNITED MINE WORKERS OF AMERICA, LOCAL NO. 1854 et al., Petitioners, v. NATIONAL LABOR RELATIONS BOARD et al. Nos. 80-692, 80-289. Argued April 28, 1981. Decided June 29, […]