2024 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2023 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2022 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2021 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2020 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2019 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2016 30 CFR 817.13 – What special requirements apply to drilled holes, wells, and exposed underground openings?

2015 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2014 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2010 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements

2009 30 CFR 817.13 – Casing and sealing of exposed underground openings: General requirements