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

Amends the Mineral Lands Leasing Act to authorize the Secretary of the Interior to lease additional lands to the holder of an oil shale lease for purposes, other than the removal of minerals contained therein, that the lessee demonstrates are necessary for the development of an oil shale operation. Permits the lessee to use the land to, among other things: (1) dispose of oil shale waste; and (2) build plants, reduction works, and other needed facilities.

Requires a lease to contain provisions providing for proper protection of environmental and other resource values.

Sets forth guidelines for determining the duration of the lease and the rental fee.