- Dams, waterways, docks, and other marine construction (1)
- Dock construction (2)
- Drainage system construction (3)
- Dredging contractor (2)
- Harbor construction (1)
- Irrigation system construction (1)
- Marine construction (11)
- Pond construction (2)
- Railroad and subway construction (2)
- Athletic and recreation facilities construction (3)
- Golf course construction (3)
- Land preparation construction (4)
- Land leveling (1)
- Industrial plant construction (1)
- Chemical plant and refinery construction (1)
- Waste water and sewage treatment plant construction (4)
- Blasting contractor, except building demolition (2)
- Earthmoving contractor (2)
- Land clearing contractor (13)
- Pile driving contractor (2)
- Power plant construction (1)
