2024 30 CFR 75.1320 – Multiple-shot blasting

2023 30 CFR 75.1320 – Multiple-shot blasting

2022 30 CFR 75.1320 – Multiple-shot blasting

2021 30 CFR 75.1320 – Multiple-shot blasting

2020 30 CFR 75.1320 – Multiple-shot blasting

2019 30 CFR 75.1320 – Multiple-shot blasting

2016 30 CFR 75.1320 – Multiple-shot blasting

2015 30 CFR 75.1320 – Multiple-shot blasting

2014 30 CFR 75.1320 – Multiple-shot blasting

2010 30 CFR 75.1320 – Multiple-shot blasting

2009 30 CFR 75.1320 – Multiple-shot blasting