The mining laws of the United States, referred to in text, are classified generally to Title 30, Mineral Lands and Mining.

1976—Pub. L. 94–550 inserted “or in any declaration, certificate, verification, or statement under penalty of perjury as permitted under section 1746 of title 28” after “under oath” in paragraph authorizing Secretary of the Interior to examine books and accounts of lessees.

1926—Act Dec. 16, 1926, inserted “and nonmetalliferous minerals, not including oil and gas” after “metalliferous minerals” in first and second paragraphs and reenacted third, fourth, and fifth paragraphs without change.

1921—Act Mar. 3, 1921, which directed amendment of this section followed by a paragraph defining the term “metalliferous”, was executed by adding such paragaph at the end of this section.

For transfer of functions of other officers, employees, and agencies of Department of the Interior, with certain exceptions, to Secretary of the Interior, with power to delegate, see Reorg. Plan No. 3 of 1950, §§ 1,2, eff. May 24, 1950, 15 F.R. 3174, 64 Stat. 1262, set out in the Appendix to Title 5, Government Organization and Employees.