Subject
Coal mines
Coal mining
16
Coal
5
Accidents
4
Coal seams
4
Coal resources
2
Evaluation
2
Explosions
2
Feasibility studies
2
Fossil fuels
2
History
2
Industrial accidents
2
Photography
2
Bump
1
Cape Breton
1
Coal deposits
1
Coal fields
1
Coal industry
1
Coal mines and mining
1
Coal quality
1
Donkin
1
Drillholes
1
Exploration
1
Iron ores
1
Mathematical models
1
Methane gas
1
Miners
1
Mines
1
Mining
1
Mining communities
1
Mining safety
1
Offshore
1
Offshore drilling
1
Photography of coal mines
1
Pollution
1
Power generation
1
Power plants
1
Power resources
1
Sampling
1
Shedden, Leslie
1
Soils
1
Statistics
1
Sydney Coalfield, N. S.
1
Vegetation
1
Water quality
1
Well drilling
1
Wells
1
Wildlife
1