# § 541e. Definitions
October 20, 191438 Stat. 741February 25, 192041 Stat. 43730 U.S.C. 181April 17, 192644 Stat. 30130 U.S.C. 271February 7, 192744 Stat. 105730 U.S.C. 281August 11, 1955section 2091 of title 42
As used in this chapter “mineral leasing laws” shall mean the Act of (); the Act of () [ et seq.]; the Act of () [ et seq.]; the Act of () [ et seq.]; and all Acts heretofore or hereafter enacted which are amendatory of or supplementary to any of the foregoing Acts; “Leasing Act minerals” shall mean all minerals which, upon , are provided in the mineral leasing laws to be disposed of thereunder; “lignite” shall mean coal classified as ASTM designation: D 388–38, according to the standards established in the American Society for Testing Materials on Coal and Coke under standard specifications for Classification of Coals by Rank, contained in public-land deposits considered as valuable under the coal-land classification standards established by the Secretary of the Interior and prescribed in section 30, Code of Federal Regulations, part 201; and “source material” shall mean uranium, thorium, or any other material which is determined by the Atomic Energy Commission pursuant to the provisions of to be source material.
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**Source Credit**: (Aug. 11, 1955, ch. 795, § 6, 69 Stat. 680.)
## Editorial Notes
### References in Text
Act of , referred to in text, is , , known as the Alaska Coal Lands Act, which was repealed by , , . The subject matter of this Act is generally covered by subchapters I to VII (§ 181 et seq.) of chapter 3A of this title. For complete classification of this Act to the Code prior to repeal, see Tables.
Act of , referred to in text, is , , as amended, known as the Mineral Leasing Act, which is classified generally to chapter 3A (§ 181 et seq.) of this title. For complete classification of this Act to the Code, see Short Title note set out under and Tables.
Act of , referred to in text, is , , which is classified generally to subchapter VIII (§ 271 et seq.) of chapter 3A of this title. For complete classification of this Act to the Code, see Tables.
Act of , referred to in text, is , , which enacted subchapter IX (§ 281 et seq.) of chapter 3A of this title, amended sections 181 and 193 of this title, and repealed subchapter VII (§ 141 et seq.) of chapter 3 of this title. For complete classification of this Act to the Code, see Tables.
## Statutory Notes and Related Subsidiaries
### Transfer of Functions
Atomic Energy Commission abolished and functions transferred by sections 5814 and 5841 of Title 42, The Public Health and Welfare. See, also, Transfer of Functions notes set out under those sections.