- Dams, waterways, docks, and other marine construction (8)
- Dam construction (1)
- Dock construction (6)
- Drainage system construction (1)
- Dredging contractor (1)
- Marine construction (12)
- Pier construction (1)
- Pond construction (1)
- Railroad and subway construction (1)
- Railroad and railway roadbed construction (3)
- Land preparation construction (15)
- Land leveling (4)
- Land reclamation (3)
- Industrial plant construction (1)
- Oil refinery construction (4)
- Waste disposal plant construction (1)
- Blasting contractor, except building demolition (7)
- Earthmoving contractor (21)
- Land clearing contractor (16)
- Pile driving contractor (10)
- Power plant construction (1)
