Versions of 36 CFR 251.64 - Reauthorization of existing uses on LawServer 2024 36 CFR 251.64 – Reauthorization of existing uses 2023 36 CFR 251.64 – Renewals 2022 36 CFR 251.64 – Renewals 2021 36 CFR 251.64 – Renewals 2020 36 CFR 251.64 – Renewals 2019 36 CFR 251.64 – Renewals 2016 36 CFR 251.64 – Renewals 2015 36 CFR 251.64 – Renewals 2014 36 CFR 251.64 – Renewals