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- Mine accidents--West Virginia--Monongah.✖[remove]4
- Monongah Mines Disaster, Monongah, W. Va., 1907.4
- Trestles--West Virginia--Monongah.✖[remove]4
- Coal Mines and Mining--Mine Disasters--Monongah, 1907.3
- Coal Mines and Mining--Mine Disasters.1