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Subject
- Blasting.1
- Bombs.1
- Campfires.1
- Construction workers--United States.1
- Criminal justice, Administration of.1
- Dairy plants.1
- Dams--Design and construction.1
- Dams--Washington.1
- Dynamite.[remove]8
- Equipment and supplies.1
- Explosions.5
- Explosives.4
- Ice caps.1
- Ice.1
- Labor.1
- Marble industry and trade.1
- Men.1
- Portuguese language.1
- Quarries and quarrying--Maryland.1
- Quarries and quarrying.2