A cost comparison of selected coal mines from Australia, Canada, Colombia, South Africa, and the United States.
Contributors: United States. Bureau of Mines.
Series: Special publication; Special publication (United States. Bureau of Mines)
Publisher: Bureau of Mines
Published: 1993
Place of publication: [Washington, D.C
Language: eng
Number of pages: 65
Subjects: Coal trade -- Costs -- Case studies.; Coal mines and mining -- Costs -- Case studies.