republic-os/legal/us/code/title-30/chapter-12/section-521.md

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LegalText	30 U.S.C. § 521	Mineral leasing claims	us	united_states_code	code_section	30	MINERAL LANDS AND MINING	12	MULTIPLE MINERAL DEVELOPMENT OF THE SAME TRACTS	521	30 U.S.C. § 521	current	119-100	2026-06-26	official	https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc30@119-100.zip	/us/usc/t30/s521	data/legal/raw/us/code/title-30/usc30.xml	6d6cef96c67ed0740d30012b643fb94e83e73ff5160a0f4c1d6a4874e2803540	355f8eb5c6ad5372de4a8e665d9ed90202d53d2aac19ac001d43948af4a4dd2f	6b4595831b01f492149ca2ca4312f6ce639b03dfedc6c9dfb438dbe3fabc3151	2026-07-04	official	legal us-code

30 U.S.C. § 521 - Mineral leasing claims

Text

(a) Preference categories Subject to the conditions and provisions of this chapter and to any valid intervening rights acquired under the laws of the United States, any mining claim located under the mining laws of the United States subsequent to July 31, 1939, and prior to February 10, 1954, on lands of the United States, which at the time of location were—

(1) included in a permit or lease issued under the mineral leasing laws; or

(2) covered by an application or offer for a permit or lease which had been filed under the mineral leasing laws; or

(3) known to be valuable for minerals subject to disposition under the mineral leasing laws,

shall be effective to the same extent in all respects as if such lands at the time of location, and at all times thereafter, had not been so included or covered or known: Provided, however, That, in order to be entitled to the benefits of this chapter, the owner of any such mining claim located prior to January 1, 1953, must have posted and filed for record, within the time allowed by the provisions of chapter 11 of this title, an amended notice of location as to such mining claim, stating that such notice was filed pursuant to the provisions of said chapter 11 and for the purpose of obtaining the benefits thereof: And provided further, That in order to obtain the benefits of this chapter, the owner of any such mining claim located subsequent to December 31, 1952, and prior to February 10, 1954, not later than one hundred and twenty days after August 13, 1954, must post on such claim in the manner required for posting notice of location of mining claims and file for record in the office where the notice or certificate of location of such claim is of record an amended notice of location for such claim, stating that such notice is filed pursuant to the provisions of this chapter and for the purpose of obtaining the benefits thereof and, within said one hundred and twenty day period, if such owner shall have filed a uranium lease application as to the tract covered by such mining claim, must file with the Atomic Energy Commission a withdrawal of such uranium lease application or, if a uranium lease shall have issued pursuant thereto, a release of such lease, and must record a notice of the filing of such withdrawal or release in the county office wherein such notice or certificate of location shall have been filed for record.

(b) Labor and improvements Labor performed or improvements made after the original location of and upon or for the benefit of any mining claim which shall be entitled to the benefits of this chapter under the provisions of subsection (a) of this section, shall be recognized as applicable to such mining claim for all purposes to the same extent as if the validity of such mining claim were in no respect dependent upon the provisions of this chapter.

(c) Withdrawal or reservation of lands As to any land covered by any mining claim which is entitled to the benefits of this chapter under the provisions of subsection (a) of this section, any withdrawal or reservation of lands made after the original location of such mining claim is hereby modified and amended so that the effect thereof upon such mining claim shall be the same as if such mining claim had been located upon lands of the United States which, subsequent to July 31, 1939, and prior to the date of such withdrawal or reservation, were subject to location under the mining laws of the United States.

(Aug. 13, 1954, ch. 730, § 1, 68 Stat. 708.)

Notes

Statutory Notes and Related Subsidiaries

Short TitleAct Aug. 13, 1954, which enacted this chapter, amended section 1805 of Title 42, The Public Health and Welfare, and enacted provisions formerly set out as a note under section 1805 of Title 42, is popularly known as the Multiple Mineral Development Act.

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.

SeparabilityAct Aug. 13, 1954, ch. 730, § 13, 68 Stat. 717, provided that: “If any provision of this Act [enacting this chapter], or the application of such provision to any person or circumstances, is held unconstitutional, invalid, or unenforcible [sic], the remainder of this Act or the application of such provision to persons or circumstances other than those as to which it is held unconstitutional, invalid, or unenforcible [sic], shall not be affected thereby.”