Mo. Rev. Stat. § 444.050
Current with changes from the 2023 Legislative Session
All lead ore or other mineral, dug or mined in or upon lands of any person in this state, shall be deemed and held to be the absolute property of the owner or lessee of such lands, except in cases where it is modified, changed or transferred by express contract.
§ 444.050, RSMo
RSMo 1939 § 14787, A.L. 1955 p. 655