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