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Date: 2013-07-19 05:50:47United States National Mine Health and Safety Academy Mine Safety and Health Administration Search and rescue Mine rescue Mining disasters Sago Mine disaster Upper Big Branch Mine disaster Mining Rescue Safety | MSHA - Letter from Joseph A. Main to the Mine Rescue Community[removed]Add to Reading ListSource URL: www.msha.govDownload Document from Source WebsiteFile Size: 1,24 MBShare Document on Facebook |