2024 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2023 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2022 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2021 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2020 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2019 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2016 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2015 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2014 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2010 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners
2009 30 CFR 75.1720-1 – Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners