Welcome to “Mining MSHA,” a regular series of posts focusing on mine safety fundamentals – but designed for both new and experienced mine safety professionals. This series will help safety professionals develop their MSHA legal knowledge, as we explore over 40 years of case law developed by the Federal Mine Safety and Health Review Commission and its bench of Administrative Law Judges. You will want to share this series with your safety personnel at all levels, because understanding what MSHA can and cannot legally do is the first step in managing your relationship with this enforcement agency.