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Topical Subjects
- Coal preparation plants.[remove]141
- Coal Mines and Mining--Preparation Plant Exteriors.82
- Coal--Transportation.22
- Freight cars.19
- Conveying machinery.13
- Coal mines and mining.12
- Coal Mines and Mining--Preparation Plant Interiors.10
- Tipples.7
- Coal Mines and Mining--Price Hill Colliery.6
- Coal Mines and Mining--Coal Transportation--Facilities.5
- Coal Mines and Mining--Tipples.4
- Docks.4
- Coal Mines and Mining--Coal Transportation--Rail.3
- Coal Mines and Mining--Consolidation Coal Company.3
- Coal Mines and Mining--Portraits--Group.3
- Power-plants.3
- Pumping machinery.2
- Coal Mines and Mining--Consolidation Coal Company--Inspection Trip, 1948.1
- Coal Mines and Mining--Mine Facilities.1
- Coal Mines and Mining--Mine Interiors--Machinery.1