A person who does construction work underground or under water, such as laying foundations or building a tunnel.
- ‘One of the sandhogs' biggest projects right now is building Water Tunnel Number 3, which is the largest capital construction project in New York City's history.’
- ‘Going underground, he reclaims this haunted, burrowed space of the city as a legacy bequeathed to him by his grandfather, one of the sandhogs who dug the tunnels of the New York subway, and reinvents himself as Treefrog.’
- ‘And a new tunnel is now being built by a fraternity of miners who call themselves the Sandhogs.’
We take a look at several popular, though confusing, punctuation marks.