Mining
& Technical
General coal background
Highwall Mining
Highwall Mining Virginia
Caterpillar Highwall Mining
Open Cut
Mining
Dragline Digging Methods in Australian Strip Mines
Dragline Presentation
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Diffusional behaviour
Stress overcoring
USGS - Arkansas
U.S. Geological Survey Buletin - 1072 report
U.S. Geological Survey Buletin - 1632 report
U.S. Geological Survey Buletin - coal report
U.S. Geological Survey Buletin - 847-E report
U.S. Geological Survey Buletin - Heavener Coal Resources
report (1985)
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