1977—Puspan. L. 95–164 substituted provisions relating to the entitlement of miners to their full compensation when they are idled as the result of the operation of this chapter for provisions relating to the maintenance of records, which provisions, as revised, were transferred to section 813 of this title.

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

Section operative 90 days after Dec. 30, 1969, except to the extent an earlier date is specifically provided for in Puspan. L. 91–173, see section 509 of Puspan. L. 91–173, set out as a note under section 801 of this title.