A bill to amend section 21 of the Act of February 25, 1920, commonly known as the Mineral leasing Act.

[AI summary unavailable — showing source text] Revises provisions under the Mineral Leasing Act of 1920 relating to oil shale leasing. Authorizes the Secretary of the Interior to lease to any qualified person or corporation any deposits of oil shale and gilsonite on Federal lands. Limits leases to a maximum of 5,120 acres, unless a lease of that size is too small to permit economically viable operations, in which case the Secretary may increase the acreage to 15,360 acres after: (1) considering the reserve potential of the tract; (2) determining that additional acreage is necessary to have an economically viable commercial operation; and (3) documenting the basis for the increased acreage. Authorizes a lessee to acquire one additional lease in any State when it has achieved production in commercial quantities from an existing lease and it is within 15 years of exhausting the commercially recoverable reserves on the existing lease. Prohibits, with respect to gilsonite leases, any person, association, or corporation from acquiring more than 6,680 acres in any State without respect to the number of leases. Authorizes the issuance of a lease under the multiple use principle notwithstanding the existence of an outstanding lease issu…