A cost comparison of selected coal mines from Australia, Canada, Colombia, South Africa, and the United States.
A cost comparison of selected coal mines from Australia, Canada, Colombia, South Africa, and the United States.
- [Washington, D.C.] : United States Dept. of the Interior, Bureau of Mines, 1993.
- vi, 65 p. : ill.
- Special publications. .
- Special publication (United States. Bureau of Mines). .
Coal trade--Costs--Case studies.
Coal mines and mining--Costs--Case studies.
Coal trade--Costs--Case studies.
Coal mines and mining--Costs--Case studies.