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 or lease.

524.

Reservation of minerals to United States.

525.

Future location of claims on mineral lands.

526.

Mining and Leasing Act operations.

(a)

Multiple use.

(b)

Mining operations to avoid damage to mineral deposits and interference with mineral operations.

(c)

Leasing Act operations to avoid damage to mineral deposits and interference with mining operations.

(d)

Damage or interference permitted by court.

(e)

Information regarding operations to be furnished on request.

527.

Determination of unpatented mining claims.

(a)

Filing of notice.

(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.