Mo. Rev. Stat. § 226.240: Authorized to acquire, by lease, purchase or condemnation, lands, mines, quarries or other property.

With the approval in writing of the governor, the state transportation department or other body designated by law to have charge of the state highways of the state of Missouri is hereby authorized to acquire by lease, purchase or condemnation any land, mines, quarries or other property containing sand, gravel, clay, rock, mineral deposits or other road building or road maintenance material.