Versions of Montana Code 90-2-201. Hydrocarbon and geology investigation program -- purpose -- grants on LawServer 2023 Montana Code 90-2-201. Hydrocarbon and geology investigation program — purpose — grants 2022 Montana Code 90-2-201. Hydrocarbon and geology investigation program — purpose — grants 2021 Montana Code 90-2-201. Hydrocarbon and geology investigation program — purpose — grants