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Date: 2014-10-27 10:04:56Federal Mine Safety and Health Review Commission Mine Safety and Health Act Coal mining Sago Mine disaster Upper Big Branch Mine disaster Mining Mine Safety and Health Administration Safety engineering | EFFECTIVE DATE: September 24, 2014 PROGRAM POLICY LETTER NO. P14-V-02Add to Reading ListSource URL: www.msha.govDownload Document from Source WebsiteFile Size: 91,36 KBShare Document on Facebook |