authority: Secs. 5(f)(1), 101(c) and (e), 103(c), (f), (g)(1) and (g)(2), 104(c), 105(a), (b)(1), (c)(1), (c)(2), (c)(3), and (d), 107(b)(1) and (e)(1), 109(b), 115(a)(1) and (a)(2), 302(a), 305(b), 312(b), 505 and 508, Federal Mine Safety and Health Act of 1977, Pub. L. 91-173 as amended by Pub. L. 95-164, 83 Stat. 745, 91 Stat. 1294, 1295, 1298, 1299, 1301, 1303, 1304, 1305, 1308, 1310 and 1316, 83 Stat. 766, 777, 785, 802, and 803 (30 U.S.C. 804(f)(1), 811(c) and (e), 813(c), (f), (g)(1) and (g)(2), 814(c), 815(a), (b)(1), (c)(1), (c)(2), (c)(3) and (d), 817(b)(1) and (e)(1), 819(b), 825(a)(1) and (a)(2), 862(a), 865(b), 872(b), 954 and 957); sec. 307, Federal Mine Safety and Health Amendments Act of 1977, Pub. L. 95-164, 91 Stat. 1322 (30 U.S.C. 801 note)