All Subjects
- Mine safety--United States.1
- Mine safety--West Virginia.1
- Mine valuation.1
- Mining schools and education--West Virginia.1
- Monongah Coal and Coke Company. Mine No. 2.1
- Montcoal Presbyterian Church (Montcoal, W. Va.)1
- Mountaintop removal mining--Law and legislation--West Virginia.1
- Museums--West Virginia--Morgantown.1
- Natural gas--West Virginia.1
- Natural resources--West Virginia.1
- Nellis (W. Va.)1
- New River Company (McDonald, W. Va.)1
- Norfolk and Western Railway Company--History.1
- Operators' Association of the Williamson Field.1
- Petroleum--West Virginia.1
- Property tax--West Virginia.1
- Safety education, Industrial--West Virginia.1
- Sandstone--West Virginia.1
- Shaft sinking.1
- Shuttle cars (Mine haulage)1