![Mining disasters / Sago Mine disaster / Upper Big Branch Mine disaster / Mining / Mine Safety and Health Administration / Safety engineering Mining disasters / Sago Mine disaster / Upper Big Branch Mine disaster / Mining / Mine Safety and Health Administration / Safety engineering](https://www.pdfsearch.io/img/8499aeca4a231a47acf743e1b1a4d594.jpg) Date: 2014-07-17 14:06:51Mining disasters Sago Mine disaster Upper Big Branch Mine disaster Mining Mine Safety and Health Administration Safety engineering | | News Release U.S. Department of Labor Office of Public Affairs Washington, D.C. Release Number: [removed]NAT
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