Weak economy and politics worry U.S. coal operators
Steve Fiscor (ed. lit.)
págs. 26-29
Post-accident two-way communications and electronic tracking
págs. 34-37
Operating and maintenance guidelines for screenbowl centrifuges
W. Schultz, R. Jahnig, Robert C. Bratton, G. H. Luttrell
págs. 38-43
Atlas Copco's New Texas snake: smaller scale suits larger market
Kyran Casteel (ed. lit.)
págs. 44-46
Rail transportation update
Lee Buchsbaum
págs. 48-50
IR keeps coal miners safe and reduces downtime
Larry G. Massey
págs. 51-53
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