411. Establishment and operation of experimental plant. 412. Acquisition of lands and interests; acceptance of money and property; disposition and use of money. § 411. Establishment and operation of experimental plant. The Secretary of the Interior, acting through the Bureau of Mines, is authorized and directed to establish, equip, and maintain a research laboratory at Reno, Nevada, for research, investigation, and as a center for information and assistance in matters pertaining to the mining, preparation, metallurgy, use, and conservation of the rare and precious metals of the Sierra Nevada mining region, and pertaining to other problems affecting the mining industry of that region. (June 21, 1950, ch. 338, § 1, 64 Stat. 248.) APPROPRIATIONS Section 3 of act June 21, 1950, provided that: "In order to carry out the purposes of this Act [this chapter] there is hereby authorized to be appropriated, out of any money in the Treasury not otherwise appropriated, the sum of (a) $750,000 for the erection and equipment of a building or buildings, including plumbing, lighting, heating, ventilation, general service, experimental equipment and apparatus, the necessary roads, walks, and ground improvements; and (b) $250,000 annually for the maintenance and operation of the experiment station, including personal services, supplies, equipment, and expenses of travel and subsistence." § 412. Acquisition of lands and interests; acceptance of money and property; disposition and use of money. For the purposes of this chapter the Secretary, acting through the Bureau of Mines, is authorized to acquire land and interests therein; to receive and accept money and property, real or personal, on interests therein, and services as a gift, bequest, or contribution; and may conduct activities or projects in cooperation with any person, firm, agency, or organization, Federal, State, or private. Money so received shall be deposited in the Treasury of the United States in a special fund or funds for disbursement by the Bureau of Mines and shall remain available for the purposes for which received and accepted until expended. (June 21, 1950, ch. 338, § 2, 64 Stat. 248.) Chapter 10.-COAL MINE SAFETY §§ 451 to 460, 471 to 483. Repealed. Pub. L. 91-173, title V, § 509, Dec. 30, 1969, 83 Stat. 803. REPEALS Chapter repealed by Pub. L. 91-173, title V, § 509, Dec. 30, 1969, 83 Stat. 803 on the operative date of sections 811 to 821 and 861 to 878 of this title, which became operative ninety days after the enactment of Pub. L. 91-173, approved Dec. 30, 1969, except that this chapter would continue to apply to any order, notice, decision, finding or any proceedings related to such order, notice, decision, or finding issued prior to the operative date of sections 811 to 812 and 861 to 878 of this title. Section 451, act May 7, 1941, ch. 87, title 1, § 101, formerly § 1, 55 Stat. 177, renumbered July 16, 1952, ch. 877, § 4(4), 66 Stat. 710, authorized the Secretary of the Interior to make annual investigations of coal mines to obtain information relating to health and safety conditions. Section 451 note, act May 7, 1941, ch. 81, § 1, as added July 16, 1952, ch. 877, § 4(1), 66 Stat. 710, authorized the citation of act May 7, 1941 as the "Federal Coal Mine Safety Act". Section 451 note, act May 7, 1941, ch. 87, § 110, formerly § 10, 55 Stat. 179, renumbered and amended July 16, 1952, ch. 877, § 4(3), (5), 66 Stat. 710, authorized appropriations for execution of former sections 451 to 460 of this title. Section 451 note, act May 7, 1941, ch. 87, § 112, formerly § 12, 55 Stat. 180, renumbered and amended July 16, 1952, ch. 877, § 4 (3), (5), 66 Stat. 710, provided if any provisions of former sections 451 to 460 of this title were held invalid the remaining sections were not to be affected. Section 452, act May 7, 1941, ch. 87, title I, § 102, formerly § 2, 55 Stat. 178, renumbered and amended July 16, 1952, ch. 877, § 4(3), (5), (6), 66 Stat. 710, empowered the Secretary of the Interior to make inspections at any time. Section 453, act May 7, 1941, ch. 87, title I, § 103, formerly § 3, 55 Stat. 178, renumbered and amended July 16, 1952, ch. 877, §§ 4(5), (7), 66 Stat. 710, authorized investigators to enter any mine affecting interstate commerce. Section 454, act May 7, 1941, ch. 87, title I, § 104, formerly § 4, 55 Stat. 178, renumbered and amended July 16, 1952, ch. 877, §§ 4(5), (7), (8), 66 Stat. 709, provided for penalty for the refusal to admit investigator. Section 455, act May 7, 1941, ch. 87, title I, § 105, formerly § 5, 55 Stat. 178, renumbered and amended July 16, 1952, ch. 877, §§ 3, 4(5), 66 Stat. 710, provided for the filing of accident information. Section 456, act May 7, 1941, ch. 87, title I, § 106, formerly § 6, 55 Stat. 178, renumbered and amended July 16, 1952, ch. 877, §§ 4(3), (5), 66 Stat. 710, directed the Secretary of the Interior to compile and publish reports and to expend funds for the advancement of health and safety in mines. Section 457, act May 7, 1941, ch. 87, title I, § 107, formerly § 7, 55 Stat. 179, renumbered and amended July 16, 1952, ch. 877, §§ 4(3), (5), (9), 66 Stat. 710, provided for administration of the provisions of former sections 451 to 460 of this title by the Bureau of Mines and directed Federal agencies to cooperate with State mine safety agencies. Section 458, act May 7, 1941, ch. 87, title I, § 108, formerly § 8, 55 Stat. 179, renumbered and amended July 16, 1952, ch. 877, §§ 4 (3), (5), 66 Stat. 710, authorized the creation of an advisory committee and provided for its functions and composition. Section 459, act May 7, 1941, ch. 87, title I, § 109, formerly § 9, 55 Stat. 179, renumbered and amended Oct. 28, 1949, ch. 782, § 1106(a), 63 Stat. 972; July 16, 1952, ch. 877, §§ 4(3), (5), 66 Stat. 710, authorized the employment of personnel for the administration of former sections 451 to 460 of this title and set out qualification conditions. Section 460, act May 7, 1941, ch. 87, title I, § 111, formerly 11, 55 Stat. 179, renumbered and amended July 16, 1952, ch. 877, §§ 4(3), (5), 66 Stat. 710, defined the term "Commerce" as used in former sections 451 to 460 of this title. Section 471, act May 7, 1941, ch. 87, title II, § 201, as added July 16, 1952, ch. 877, § 1, 66 Stat. 692, and amended Mar. 26, 1966, Pub. L. 89-376, § 2(a), 80 Stat. 84, defined terms as used in former sections 471 to 483 of this title. Section 471 note, act May 7, 1941, ch. 87, § 215, added July 16, 1952, ch. 877, § 1, 66 Stat. 709, provided that if any provisions of former sections 471 to 483 of this title were held invalid the remaining sections were not to be affected. Section 471 note, act May 7, 1941, ch. 87, § 214, added July 16, 1952, ch. 877, § 1, 66 Stat. 709, authorized appropriations of not to exceed $3,000,000 in any fiscal year, as may be necessary for execution of the provisions of former section 471 to 483 of this title. Section 472, act May 7, 1941, ch. 87, title II, § 202, as added July 16, 1952, ch. 877, § 1, 66 Stat 693, and amended Mar. 26, 1966, Pub. L. 89-376, § 3(b), 80 Stat. 87, set out provisions for annual and special instructions, directed Federal agencies to coordinate operations with State mine safety agencies created pursuant to enumerated conditions and authorized any such State inspector to enter any mine affecting commerce. Section 473, act May 7, 1941, ch. 87, title II, § 203, as added July 16, 1952, ch. 877, § 1, 66 Stat. 694, and amended Mar. 26, 1966, Pub. L. 89–376, § 3(a), 80 Stat. 85, set out procedures for withdrawal when immediate or nonimmediate dangers were found to exist in mines. Section 474, act May 7, 1941, ch. 87, title II, § 204, as added July 16, 1952, ch. 877, § 1, 66 Stat. 696, set out procedures for giving notice of findings and orders. Section 475, act May 7, 1941, ch. 87, title II, § 205, as added July 16, 1952, ch. 877, § 1, 66 Stat. 697, and amended Mar. 26, 1966, Pub. L. 89-376, § 3(c), (d), 80 Stat. 87, authorized the continuation of the Federal Coal Mine Safety Board of Review and provided for its composition, powers, and procedures. Section 476, Act May 7, 1941, ch. 87, title II, § 206, as added July 16, 1952, ch. 877, § 1, 66 Stat. 699, and amended Mar. 26, 1966, Pub. L. 89-376, § 3 (e), 80 Stat. 88, set out procedures for the Director of the Bureau of Mines to review applications for annulment or revision of orders closing mines because of immediate and nonimmediate dangers. Section 477, act May 7, 1941, ch. 87, title II, § 207, as added July 16, 1952, ch. 877, § 1, 66 Stat. 700, and amended June 11, 1960, Pub. L. 86–507, § 1(22), (23), 74 Stat. 201; Mar. 26, 1966, Pub. L. 89-376, § 3 (f), 80 Stat. 90, set out procedures for review by the Federal Coal Mine Safety Board of Review of applications for annulment or revision of orders closing mines because of immediate or nonimmediate dangers. Section 478, act May 7, 1941, ch. 87, title II, § 208, as added July 16, 1952, ch. 877, § 1, 66 Stat. 702, and amended June 11, 1960, Pub. L. 86-507, § 1(24), 74 Stat. 201, set out procedures for judicial review of orders by the Federal Coal Mine Safety Board of Review. Section 479, act May 7, 1941, ch. 87, title II, § 209, as added July 16, 1952, ch. 877, § 1, 66 Stat. 703 set out mandatory mine safety provisions respecting roof support, ventilation, coal dust and rock dust, electrical equipment, fire protection, and other miscellaneous matters. Section 480, act May 7, 1941, ch. 87, title II, § 210, as added July 16, 1952, ch. 877, § 1, 66 Stat. 708, and amended Mar. 26, 1966, Pub. L. 89-376, § 4, 80 Stat. 91, set out penalties for violations of provisions of former sections 473 or 476 of this title. Section 481, act May 7, 1941, ch. 87, title II, § 211, as added July 16, 1952, ch. 877, § 1, 66 Stat. 708, provided for the effect on State laws of provisions of former sections 471 to 483 of this title. Section 482, act May 7, 1941, ch. 87, title II, § 212, as added July 16, 1952, ch. 877, § 1, 66 Stat. 709, and amended Mar. 26, 1966, Pub. L. 89-376, § 5, 80 Stat. 91, set out procedures for issuance of certificates of equipment conformity, expanded educational programs, directed Federal agencies to coordinate their activities with State agencies to eliminate duplication of efforts, expenses and enforcement requirements, and provided that the Director annually report on the administration of his functions. Section 483, act May 7, 1941, ch. 87, title II, § 213, as added July 16, 1952, ch. 877, § 1, 66 Stat. 709, provided that the Administrative Procedure Act was not to be applicable to provisions of former sections 471 to 483 of this title. The subject matter formerly contained in this chapter is now covered by chapter 22 of this title. Chapter 11.-MINING CLAIMS ON LANDS SUBJECT TO MINERAL LEASING LAWS Sec. 501. Mining claims located between July 31, 1939 and January 1, 1953; force and effect; labor and improvement; withdrawal or reservation. 502. Reservation of minerals to the United States; rights of entry, disposition and removal. 503. Reservations required by law; atomic energy materials. 504. Power to make arrangements respecting atomic energy materials as unaffected. 505. Definition of mineral leasing laws. CHAPTER REFERRED TO IN OTHER SECTIONS This chapter is referred to in title 42 section 2098. § 501. Mining claims located between July 31, 1939 and January 1, 1953; force and effect; labor and improvement; withdrawal or reservation. (a) Subject to the provisions of this chapter and to any valid intervening rights acquired under 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 January 1, 1953, on lands of the United States which were, at the time of such location (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 as if such mining claim had been located on lands which were at the time of such location subject to location under the mining laws of the United States: Provided, however, That in order to obtain the benefits of this chapter, the owner of any such mining claim shall, not later than one hundred and twenty days after August 12, 1953, 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 of such claim, stating that such notice is filed pursuant to the provisions of this chapter and for the purpose of obtaining the benefits thereof. (b) Labor performed or improvements made upon or for the benefit of such mining claims after the original location thereof shall be recognized as applicable thereto for all purposes to the same extent as labor performed and improvements made upon or for the benefit of mining claims which are not affected by this chapter. (c) Any withdrawal or reservation made after the original location of such mining claim affecting land covered by such mining claim is 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, were subject to location under the mining laws of the United States. (Aug. 12, 1953, ch. 405, § 1, 67 Stat. 539.) REFERENCES IN TEXT For definition of "mineral leasing laws", referred to in subsec. (a) (1-3), see section 505 of this title. SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in sections 502, 504, 521 of this title. § 502. Reservation of minerals to the United States; rights of entry, disposition and removal. Any mining claim given force and effect as provided in section 501 of this title shall be subject to the reservation to the United States of all minerals which, upon August 12, 1953, are provided in the mineral leasing laws to be disposed of thereunder, and the right of the United States, its lessees, permittees, and licensees, to enter upon the land covered by such mining claim to prospect for, mine, treat, store, and remove such minerals, and to use so much of the surface and subsurface of such mining claim as may be necessary for such purposes, and to enter upon such land whenever reasonably necessary for the purpose of prospecting for, mining, treating, storing, and removing such minerals on and from other lands of the United States; and any patent issued for any such mining claim shall contain such reservation. (Aug. 12, 1953, ch. 405, § 2, 67 Stat. 539.) REFERENCES IN TEXT For definition of "mineral leasing laws", see section 505 of this title. SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in section 521 of this title. § 503. Reservations required by law; atomic energy materials. The rights under any mining claim given force and effect by this chapter shall also be subject to the reservation to the United States specified in section 5(b) (7) of the Atomic Energy Act of 1946, as amended, and, in addition, any reservation or reservations required by any other provision or provisions of law; and any patent issued for such mining claim shall contain such reservations. (Aug. 12, 1953, ch. 405, § 3, 67 Stat. 540.) REFERENCES IN TEXT Section 5(b) (7) of the Atomic Energy Act of 1946, as amended, referred to in text, was formerly classified to section 1805 (b) (7) of this title and prohibited any benefit to a person from confidential information acquired from participation in development of atomic energy program respecting deposits of fissionable source materials on public lands. Such provisions are now covered in section 68 (a), (b) of the Atomic Energy Act of 1954, as amended, classified to section 2098 (a), (b) of this title. SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in section 521 of this title; title 42 section 2098. § 504. Power to make arrangements respecting atomic energy materials as unaffected. Except as this chapter provides for (a) validation of certain mining claims located on lands described in section 501 of this title, and (b) the modification and amendment of certain withdrawals or reservations of land, nothing in this chapter shall affect any power or authority duly vested in the Atomic Energy Commission or any other agency, department or officer of the United States to make leases, withdrawals, reservations or other arrangements with respect to source materials as defined in section 5(b)(1) of the Atomic Energy Act of 1946, as amended. (Aug. 12, 1953, ch. 405, § 4, 67 Stat. 540.) REFERENCES IN TEXT Section 5(b) (1) of the Atomic Energy Act of 1946, as amended, referred to in text, was formerly classified to section 1805 (b) (1) of this title and defined "source material", now so defined in section 11(z) of the Atomic Energy Act of 1954, as amended, classified to section 2014 (z) of this title. SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in section 521 of this title. § 505. Definition of mineral leasing laws. As used in this chapter "mineral leasing laws" shall mean the Act of October 20, 1914; the Act of February 25, 1920; the Act of April 17, 1926; the Act of February 7, 1927, and all Acts heretofore or hereafter enacted which are amendatory of or supplementary to any of the foregoing Acts. (Aug. 12, 1953, ch. 405, § 5, 67 Stat. 540.) REFERENCES IN TEXT Act Oct. 20, 1914, referred to in the text, means Alaska Coal Lands Act, Oct. 20, 1914, ch. 330, 38 Stat. 741, which was repealed by Pub. L. 86–252, § 1, Sept. 9, 1959, 73 Stat. 490 and is covered by coal provisions of Mineral Lands Leasing Act, which are classified to section 201 et seq. of this title. Section 2 of act Oct. 20, 1914, had been previously repealed by Pub. L. 85-508, § 20, July 7, 1958, 72 Stat. 351. Act Feb. 25, 1920, referred to in the text, means Mineral Lands Leasing Act, Feb. 25, 1920, ch. 85, 41 Stat. 437, which is classified to section 181 et seq. of this title. Acts Apr. 17, 1926, and Feb. 7, 1927, referred to in the text, mean Acts Apr. 17, 1926, ch. 158, 44 Stat. 301, and Feb. 7, 1927, ch. 66, 44 Stat. 1057, which are classified to sections 271 et seq. and 281 et seq., respectively, of this title. SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in section 521 of this title. Chapter 12.-MULTIPLE MINERAL DEVELOPMENT OF THE SAME TRACTS Sec. 521. Mineral leasing claims. (a) Preference categories. (b) Labor and improvements. (c) Withdrawal or reservation of lands. 522. Conflicting periods of location of claims. 523. Uranium leases. (a) Right to locate mining claims. (b) Priorities and conflicting rights; termination of rights. (c) Future claims on lands covered by application 524. Reservation of minerals to United States. (b) Mining operations to avoid damage to mineral (c) Leasing Act operations to avoid damage to (d) Damage or interference permitted by court. 527. Determination of unpatented mining claims. (b) Failure to file verified statement. (c) Hearings. (d) Request for copy of notice. (e) Failure to deliver or mail copy of notice. 528. Waiver and relinquishment of mineral rights. 529. Helium lands subject to entry. 530. Definitions. 531. Approval of United States officials. CROSS REFERENCES Provisions of chapter not amended or repealed by provisions respecting entry and location on coal lands on discovery of source material, see section 541h of this title. CHAPTER REFERRED TO IN OTHER SECTIONS This chapter is referred to in section 1005 of this title. § 521. Mineral leasing claims. (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 sections 501 to 505 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 sections 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.) REFERENCES IN TEXT For definition of "mineral leasing laws", referred to in subsec. (a) (1—3), see section 530 of this title. SEPARABILITY OF PROVISIONS Section 13 of act Aug. 13, 1954, provided that: "If any provision of this Act [this chapter], or the application of such provision to any person or circumstances, is held unconstitutional, invalid, or unenforcible, the remainder of this Act [this chapter] or the application of such provision to persons or circumstances other than those as to which it is held unconstitutional, invalid, or unenforcible, shall not be affected thereby." SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in sections 524, 541, 541b, 541h of this title. § 522. Conflicting periods of location of claims. (a) If any mining claim which shall have been located subsequent to December 31, 1952, and prior to December 11, 1953, and which shall be entitled to the benefits of this chapter, shall cover any lands embraced within any mining claim which shall have been located prior to January 1, 1953, and which shall be entitled to the benefits of this chapter, then as to such area of conflict said mining claim so located subsequent to December 31, 1952, shall be deemed to have been located December 11, 1953. (b) If any mining claim hereafter located shall cover any lands embraced within any mining claim which shall have been located prior to February 10, 1954, and which shall be entitled to the benefits of this chapter, then as to such area of conflict said mining claim hereafter located shall be deemed to have been located one hundred and twenty-one days after August 13, 1954. (Aug. 13, 1954, ch. 730, § 2, 68 Stat. 709.) SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in sections 524, 541, 541b, 541h of this ttile. § 523. Uranium leases. (a) Right to locate mining claims. Subject to the conditions and provisions of this chapter and to any valid prior rights acquired under the laws of the United States, the owner of any pending uranium lease application or of any uranium lease shall have, for a period of one hundred and twenty days after August 13, 1954, as limited in subsection (b) of this section, the right to locate mining claims upon the lands covered by said application or lease. (b) Priorities and conflicting rights; termination of rights. Any rights under any such mining claim so hereafter located pursuant to the provisions of subsection (a) of this section shall be subject to any rights of the owner of any mining claim which was located prior to February 10, 1954, and which was valid on August 13, 1954 or which may acquire validity under the provisions of this chapter. As to any lands covered by a uranium lease and also by a pending uranium lease application, the right of mining location under this section, as between the owner of said lease and the owner of said application, shall be deemed as to such conflict area to be vested in the owner of said lease. As to any lands embraced in more than one such pending uranium lease application, such right of mining location, as between the owners of such conflicting applications, shall be deemed to be vested in the owner of the prior application. Priority of such an application shall be determined by the time of posting on a tract then available for such leasing of a notice of lease application in accordance with paragraph (c) of the Atomic Energy Commission's Domestic Uranium Program Circular 7 (10 C. F. R. 60.7 (c)) provided there shall have been timely compliance with the other provisions of said paragraph (c) or, if there shall not have been such timely compliance, then by the time of the filing of the uranium lease application with the Atomic Energy Commission. Any rights under any mining claim located under the provisions of this section shall terminate at the expiration of thirty days after the filing for record of the notice or certificate of location of such mining claim unless, within said thirty-day period, the owner of the uranium lease application or uranium lease upon which the location of such mining claim was predicated shall have filed with the Atomic Energy Commission a withdrawal of said application or a release of said lease and shall have recorded a notice of the filing of such withdrawal or release in the county office wherein such notice or certificate of location shall be of record. (c) Future claims on lands covered by application or lease. Except as otherwise provided in subsections (a) and (b) of this section, no mining claim hereafter located shall be valid as to any lands which at the time of such location were covered by a uranium lease application or a uranium lease. Any tract upon which a notice of lease application has been posted in accordance with said paragraph (c) of said Circular 7 shall be deemed to have been included in a uranium lease application from and after the time of the posting of such notice of lease application: Provided, That there shall have been timely compliance with the other provisions of said paragraph (c) or, if there shall not have been such timely compliance, then from and after the time of the filing of a uranium lease application with the Atomic Energy Commission. (Aug. 13, 1954, ch. 730, § 3, 68 Stat. 709.) SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in sections 524, 541, 541b, 541h, of this title. § 524. Reservation of minerals to United States. Every mining claim or millsite (1) heretofore located under the mining laws of the United States which shall be entitled to benefits under sections 521 to 523 of this title; or (2) located under the mining laws of the United States after August 13, 1954 shall be subject, prior to issuance of a patent therefor, to a reservation to the United States of all Leasing Act minerals and of the right (as limited in section 526 of this title) of the United States, its lessees, permittees, and licensees to enter upon the land covered by such mining claim or millsite and to prospect for, drill for, mine, treat, store, transport, and remove Leasing Act minerals and to use so much of the surface and subsurface of such mining claim or millsite as may be necessary for such purposes, and whenever reasonably necessary, for the purpose of prospecting for, drilling for, mining, treating, storing, transporting, and removing Leasing Act minerals on and from other lands; and any patent issued for any such mining claim or millsite shall contain such reservation as to, but only as to, such lands covered thereby which at the time of the issuance of such patent were (a) included in a permit or lease issued under the mineral leasing laws; or (b) covered by an application or offer for a permit or lease filed under the mineral leasing laws; or (c) known to be valuable for minerals subject to disposition under the mineral leasing laws. (Aug. 13, 1954, ch. 730, § 4, 68 Stat. 710.) REFERENCES IN TEXT For definitions of “Leasing Act minerals" and "mineral leasing laws", referred to in subds. (1) and (2) (a)—(c), respectively, see section 530 of this title. SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in sections 527, 528, 541, 541b, 541h of this title. § 525. Future location of claims on mineral lands. Subject to the conditions and provisions of this chapter, mining claims and millsites may hereafter be located under the mining laws of the United States on lands of the United States which at the time of location are (a) included in a permit or lease issued under the mineral leasing laws; or (b) covered by an application or offer for a permit or lease filed under the mineral leasing laws; or (c) known to be valuable for minerals subject to disposition under the mineral leasing laws; to the same extent in all respects as if such lands were not so included or covered or known. (Aug. 13, 1954, ch. 730, § 5, 68 Stat. 710.) REFERENCES IN TEXT For definition of "mineral leasing laws", referred to in clauses (a)(c), see section 530 of this title. SECTION REFERRED TO IN OTHER SECTIONS This section is referred to in sections 541, 541b, 541h of this title. § 526. Mining and Leasing Act operations. (a) Multiple use. Where the same lands are being utilized for mining operations and Leasing Act operations, each of |