2024 30 CFR 816.41 – Hydrologic-balance protection

2023 30 CFR 816.41 – Hydrologic-balance protection

2022 30 CFR 816.41 – Hydrologic-balance protection

2021 30 CFR 816.41 – Hydrologic-balance protection

2020 30 CFR 816.41 – Hydrologic-balance protection

2019 30 CFR 816.41 – Hydrologic-balance protection

2016 30 CFR 816.41 – Under what conditions may I discharge water and other materials into an underground mine?

2015 30 CFR 816.41 – Hydrologic-balance protection

2014 30 CFR 816.41 – Hydrologic-balance protection

2010 30 CFR 816.41 – Hydrologic-balance protection

2009 30 CFR 816.41 – Hydrologic-balance protection