1977—Subsec. (a). Pub. L. 95–164 inserted reference to mines other than coal mines.
Statutory Notes and Related Subsidiaries
Effective Date of 1977 Amendment
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.