2024 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2023 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2022 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2021 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2020 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2019 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2016 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2015 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2014 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2010 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania

2009 30 CFR 820.11 – Performance standards: Anthracite mines in Pennsylvania