Cordero Rojo Mine

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The Cordero Rojo Mine is a coal mining complex located in the state of Wyoming in the United States, in the coal-rich Powder River Basin. The mine is of open pit construction and employs several dragline excavators. Two coal-processing facilities are located on-site, and crushed coal is shipped by rail to electric utility customers in the south and west of the United States.[1][2] The mine employs between 430[1] and 540[2] people.

The mining complex is wholly owned by Cloud Peak Energy. Cloud Peak Energy acquired the mine in 2010 from Rio Tinto Energy America.

The mine was formerly owned by the giant mining company Rio Tinto Group, thru its subsidiary Rio Tinto Energy America. It was formed in 1997 from the consolidation of two previously existing mines, the Cordero mine (purchased by Rio Tinto in 1993) and the Caballo Rojo mine (purchased in 1997).[1] The mine produced between 34 and 36 million tons of coal per year in the years 2004 to 2006,[1] over 40 million tons of coal in 2007, and 22.8 million tons in 2015, making the Cordero Rojo actually fourth-largest producer of coal in the United States.[3][4]


  1. ^ a b c d "Cordero Rojo Coal Mine, WY, USA". SPG Media Limited. Retrieved 2009-04-14.
  2. ^ a b "Cordero Rojo Mine". Rio Tinto Energy America website. Rio Tinto Group. Retrieved 2009-04-14.
  3. ^ "Major U.S. Coal Mines, 2007". Energy Information Administration of the Department of Energy. September 2008. Retrieved 2009-04-14.
  4. ^

Coordinates: 44°06′07″N 105°25′05″W / 44.10194°N 105.41806°W / 44.10194; -105.41806