This chapter, referred to in text, was in the original “this Act”, meaning Pub. L. 91–173, Dec. 30, 1969, 83 Stat. 742, known as the Federal Mine Safety and Health Act of 1977, which is classified principally to this chapter. For complete classification of this Act to the Code, see Short Title note set out under section 801 of this title and Tables.

Section 201 of the Revenue and Expenditure Control Act of 1968 (82 Stat. 251, 270), referred to in text, is section 201 of Pub. L. 90–364, title II, June 28, 1968, 82 Stat. 270, which was set out as a note under section 3101 of Title 5 and was repealed by Pub. L. 91–47, title V, § 503, July 22, 1969, 83 Stat. 83.

1977—Pub. L. 95–164 substituted “practical experience in mining” for “practical experience in the mining of coal” and inserted provision requiring that mine inspectors, to the maximum feasible extent, be persons with at least five years practical mining experience and that in assigning inspectors due consideration be given to previous experience in the particular type mining operations where inspections are to be made.

Amendment by Pub. L. 95–164 effective 120 days after Nov. 9, 1977, except as otherwise provided, see section 307 of Pub. L. 95–164, set out as a note under section 801 of this title.

Pub. L. 95–164, title III, § 304, Nov. 9, 1977, 91 Stat. 1320, provided that: “Nothing contained in this Act [see Short Title of 1977 Amendment note under section 801 of this title] or any amendment made by this Act shall be construed to reduce the number of inspectors engaged in enforcement of the Federal Coal Mine Health and Safety Act of 1969 [this chapter] and the Federal Metal and Nonmetallic Mine Safety Act [section 721 et seq. of this title] as in effect prior to the effective date of this Act [120 days after Nov. 9, 1977] or to reduce the number of inspectors engaged in the enforcement of the Occupational Safety and Health Act of 1970 [section 651 et seq. of Title 29, Labor].”