Title 30, Mineral Lands and MiningRelease 119-102

§187 Assignment or Subletting of Leases; Relinquishment of Rights Under Leases; Conditions in Leases for Protection of Diverse Interests in Operation of Mines, Wells, Etc.; State Laws Not Impaired

Title 30 › CHAPTER 3A — LEASES AND PROSPECTING PERMITS › SUBCHAPTER I — GENERAL PROVISIONS › § 187

Last updated Aug 21, 2026|Official source

Summary

Leases under this law cannot be transferred or sublet without the Secretary of the Interior’s permission. A leaseholder may give up all rights in writing at any time if the Secretary accepts it, and then the leaseholder is freed from future duties. With the Secretary’s okay, a leaseholder may also surrender part of the leased area. Each lease must require careful and safe operation. The Secretary can set safety and waste‑prevention rules that must be followed, including limiting underground work to eight hours a day except in emergencies. No child under sixteen may work below ground. Workers must be free to buy where they choose, be paid at least twice a month in U.S. money, and have fair weighing of the coal they mine. The Secretary may add other rules to protect U.S. interests, prevent monopoly, ensure reasonable prices, and protect the public. Those lease rules must not conflict with state law.

Full Legal Text

Title 30, §187

Mineral Lands and Mining, Source: USLM XML via OLRC

No lease issued under the authority of this chapter shall be assigned or sublet, except with the consent of the Secretary of the Interior. The lessee may, in the discretion of the Secretary of the Interior, be permitted at any time to make written relinquishment of all rights under such a lease, and upon acceptance thereof be thereby relieved of all future obligations under said lease, and may with like consent surrender any legal subdivision of the area included within the lease. Each lease shall contain provisions for the purpose of insuring the exercise of reasonable diligence, skill, and care in the operation of said property; a provision that such rules for the safety and welfare of the miners and for the prevention of undue waste as may be prescribed by said Secretary shall be observed, including a restriction of the workday to not exceeding eight hours in any one day for underground workers except in cases of emergency; provisions prohibiting the employment of any child under the age of sixteen in any mine below the surface; provisions securing the workmen complete freedom of purchase; provision requiring the payment of wages at least twice a month in lawful money of the United States, and providing proper rules and regulations to insure the fair and just weighing or measurement of the coal mined by each miner, and such other provisions as he may deem necessary to insure the sale of the production of such leased lands to the United States and to the public at reasonable prices, for the protection of the interests of the United States, for the prevention of monopoly, and for the safeguarding of the public welfare. None of such provisions shall be in conflict with the laws of the State in which the leased property is situated.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

Amendments

1978—Pub. L. 95–554 substituted “provisions prohibiting the employment of any child under the age of sixteen in any mine below the surface” for “provisions prohibiting the employment of any boy under the age of sixteen or the employment of any girl or woman, without regard to age, in any mine below the surface”.

Reference

Citations & Metadata

Citation

30 U.S.C. § 187

Title 30, Mineral Lands and Mining

Last Updated

Aug 21, 2026

Release point: 119-102