Created 26-Oct-11
Modified 26-Oct-11
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Coal Mining - WY - Powder River Basin2010_October_Coal_Wind_Wyoming_Gillette_EcoFlight052010_October_Coal_Wind_Wyoming_Gillette_EcoFlight062010_October_Coal_Wind_Wyoming_Gillette_EcoFlight07Coal Mining - WY - Powder River BasinCoal Mining - WY - Powder River Basin