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SW: added external links
==References==
{{reflist}}
== External links ==
* [http://www.eia.doe.gov/cneaf/coal/page/acr/table9.html "Major U.S. Coal Mines,"] Energy Information Administration
* [http://www.rtea.com/pages/corderorojo.aspx "Cordero Rojo Mine,"] Rio Tinto Energy America
[[Category:Rio Tinto Subsidiaries]]
