Sandhog

Term for underground construction workers in New York City

Sandhog is the slang term given to urban miners and construction workers who work underground on a variety of excavation projects in New York City, and later other cities. Generally these projects involve tunneling, caisson excavation, road building, or some other type of underground construction or mining projects. The miners work with a variety of tools including using tunnel boring machines and explosives to remove material for the project they are building. The term sandhog is an American colloquialism.

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