2024 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2023 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2022 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2021 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2020 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2019 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2016 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2015 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2014 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2010 30 CFR 75.1712-4 – Waiver of surface facilities requirements

2009 30 CFR 75.1712-4 – Waiver of surface facilities requirements