Alabama coal transportation-A system in change
David Gambrel
págs. 20-21
Longwall population grows amid further M&A activity
Steve Fiscor
págs. 22-28
Tracks & treads: dozers and loaders dig into production support roles
Russ Carter
págs. 29-33
LOCKED out: aging locks and dams jeopardize inland waterways
Lee Buchsbaum
págs. 36-40
FLSmidth ups the ante for Ludowici
págs. 42-45
Brazing of carbide mining tools
Yehuda Baskin
págs. 46-47
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