On National Miners Day, we remember the 362 lives lost in the Dec. 6, 1907, Monongah mine disaster and throughout the history of mining in the United States. It’s also a day we recognize the critical work performed by today’s miners, which provides important materials we all use in our daily lives. Learn more about MSHA's work to keep miners safe and healthy on the job at msha.gov. #NationalMinersDay #Mining #MineSafety #WorkerSafety | U.S. Department of Labor