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The '''Black Thunder Coal Mine''' is a surface [[coal mine]] in the [[U.S. state]] of [[Wyoming]], located at {{coord|43|40|N|105|18|W|display=inlinein Campbell County, Wyoming,title}} in the [[Powder River Basin]] , which contains one of the largest deposits of coal in the world. Black Thunder is the second most productive mine in the [[United States]] and one of the largest in the world. In [[2007]], the mine produced 86,196,275 [[short tons]] of coal,<ref name="eia">{{cite web|url=http://www.eia.doe.gov/cneaf/coal/page/acr/acr_sum.html|title=Energy Information Administration - Annual Report|accessdate=2008-01-25}}</ref> nearly 20 percent of Wyoming's total coal production, and higher than 23 other individual coal producing states.<ref name="eia" />