Subject
Coal mine waste
Acid mine drainage
5
Longwall mining
4
Mine ventilation
3
Coal mines and mining
2
Firedamp
2
Water chemistry
2
Anemometer
1
Coal Thermal properties Research
1
Coal mines and mining Environmental aspects
1
Coal preparation
1
Coal slurry
1
Coal-fired power plants
1
Coalbed methane
1
Factory and trade waste
1
Ground control (Mining)
1
Groundwater flow Computer simulation
1
Hydrogeology
1
Mineral industries Waste disposal
1
Mines and mineral resources
1
Petroleum waste
1
Reclamation of land
1
Salvage (Waste, etc.)
1
Sanitary landfills
1
Sewage Purification
1
Spoil banks
1
Sulfur
1
Water Pollution
1
Water diversion
1
Water quality
1