Subject
Geologic maps
7
Bedrock
5
Geophysical profiles
5
Airborne methods
4
Geology
4
Geophysical surveys
4
Mine development
3
Stratigraphy
3
coal waste dump reclamation
3
exploration activities
3
Cape Breton Coalfield, N. S.
2
Electromagnetic waves
2
Gamma ray spectrometry
2
Geochemical maps
2
Jubliee Deposit
2
Lead ores
2
Magnetic Survey maps
2
Mineral occurrences
2
Mineralization
2
Radiometric methods
2
Windsor Group
2
Zinc
2
Zinc ores
2
Aerial surveys
1
Aeromagnetic maps
1
Basalts
1
Basins
1
Cape Breton Coalfields, N. S.
1
Coal fields
1
Coal preparation
1
Coastlines
1
Collecting
1
Copper ores
1
Correlation
1
Desulferization
1
Drilling
1
Economic geology
1
Geology, Structural
1
Geophysical maps
1
Horton Group
1
Mineral deposits
1
Minerals
1
Rocks
1
Sedimentary ores
1
Sedimentation
1
Sulphur
1
Tectonics
1
Topography
1