All contracts, leases, and agreements for the sale of sand and gravel from the lands of the state which are not owned, occupied, or held in trust by or assigned or dedicated to any department, agency, or institution and from the public water bottoms of the State of Alabama shall be negotiated, consummated, and administered by the Commissioner of Conservation and Natural Resources, acting through the Lands Division of the Department of Conservation and Natural Resources, which division shall receive as the cost of administration 10 percent of all revenues accruing from the sale of sand and gravel or royalties resulting from sand and gravel leases.
Ala. Code § 9-15-52 (1975)