Subject
Mines and mineral resources
32
Longwall mining
15
Coal mines and mining
12
Ground control (Mining)
9
Mine roof control
9
Mine ventilation
7
Mineral industries
6
Rock mechanics
6
Boring
5
Coal mines and mining Dust control
5
Coal mines and mining Safety measures
5
Mine subsidences
5
Strategic materials
5
Mine dusts
4
Mine explosions Prevention
4
Mine fires
4
Mining engineering
4
Prospecting
4
Blasting
3
Coal Geology
3
Coal mines and mining Fires and fire prevention
3
Combustion, Spontaneous
3
Geology
3
Geology, Economic
3
Gold mines and mining
3
Gold ores
3
Leaching
3
Mine fires Prevention and control
3
Mine hoisting Equipment and supplies Testing
3
Mine safety
3
Mining machinery
3
Ore deposits
3
Phosphate rock
3
Placer deposits
3
Rock bursts
3
Water jets
3
Wire rope Fatigue Testing
3
Abandoned coal mines
2
Acid mine drainage
2
Arizona Mineral resources
2
Chromite
2
Chromium
2
Clay industries
2
Coal Combustion
2
Coal augers
2
Coal mine accidents
2
Coal mine waste
2
Coal mines and mining Electric equipment
2
Coal-cutting bits Testing
2
Coalbed methane drainage
2
more ...