2024 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2023 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2022 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2021 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2020 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2019 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2016 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2015 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2014 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2010 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy

2009 30 CFR 75.501-3 – New openings; mines above water table and never classed gassy