Contour Surface Coal Mines, West Virginia Inspecting Coal Mining Permits using Unmanned Aircraft Systems November 6-8, 2012 The Office of Surface Mining,

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Date: 2013-02-19 13:23:06		Contour Surface Coal Mines, West Virginia Inspecting Coal Mining Permits using Unmanned Aircraft Systems November 6-8, 2012 The Office of Surface Mining, Add to Reading List Source URL: uas.usgs.gov Download Document from Source Website File Size: 3,33 MB Share Document on Facebook