Wyo. Stat. § 36-10-101: Authority to acquire state lands; reservation of mineral rights.

The United States shall be and is authorized to acquire by purchase or condemnation or otherwise, any land in this state required for public buildings, custom houses, arsenals, national cemeteries, or other purposes essential to the national defense in necessary use of said land by armed naval, air or land forces, or land to be physically occupied by the Boysen Dam, its reservoir, power plant and distribution systems, or lands to be physically occupied by dams, reservoirs, power plants and distribution systems in United States reclamation service projects, and the state of Wyoming hereby consents thereto, provided that the mineral content of lands so acquired, if owners thereof so elect, shall be reserved to such owners.