A Study of U.S. Coal Mine Closures Since 1994
SME Preprint 2017 Annual Meeting, Denver, Colorado
Missouri University of Science and Technology (Grant AFC215-41)
Brinkman, J. L., Schafler, J. R., Johnson, C. E.
A Study of U.S. Coal Mine Closures Since 1994
SME Preprint 2017 Annual Meeting, Denver, Colorado
Missouri University of Science and Technology (Grant AFC215-41)
Brinkman, J. L., Schafler, J. R., Johnson, C. E.