Versions of 43 CFR Part 3140 - Leasing in Special Tar Sand Areas on LawServer 2024 43 CFR Part 3140 – Leasing in Special Tar Sand Areas 2023 43 CFR PART 3140 – LEASING IN SPECIAL TAR SAND AREAS 2022 43 CFR Part 3140 – Leasing in Special Tar Sand Areas 2020 43 CFR Part 3140 – Leasing in Special Tar Sand Areas