Topical Subjects
- Mine gases--Testing.1
- Mine rescue work.1
- Mine ventilation.1
- Mounds.1
- Piers--New Jersey--South Amboy.1
- Pullman cars.1
- Roof trusses.1
- Scrapers (Earthmoving machinery)1
- Showers (Plumbing fixtures)1
- Slate--Geology.1
- Smelting--West Virginia--Wheeling.1
- Steam locomotives--Pennsylvania--Somerset.1
- Steam locomotives--Pennsylvania.1
- Steam locomotives.1
- Steam power plants.1
- Steamboats.1
- Steel--Exhibitions.1
- Tar acids.1
- Tipples--Kentucky--Closplint.1
- Tipples--Kentucky--Dunham.1