- Dams, waterways, docks, and other marine construction (23)
- Caisson drilling (2)
- Dam construction (1)
- Dock construction (8)
- Drainage system construction (13)
- Dredging contractor (4)
- Irrigation system construction (3)
- Marine construction (92)
- Pier construction (5)
- Pond construction (12)
- Waterway construction (1)
- Railroad and subway construction (7)
- Railroad and railway roadbed construction (10)
- Athletic and recreation facilities construction (7)
- Athletic field construction (3)
- Golf course construction (9)
- Tennis court construction (16)
- Land preparation construction (19)
- Land leveling (4)
- Land reclamation (3)
- Timber removal (2)
- Industrial plant construction (5)
- Oil refinery construction (2)
- Waste disposal plant construction (6)
- Waste water and sewage treatment plant construction (10)
- Blasting contractor, except building demolition (8)
- Earthmoving contractor (13)
- Land clearing contractor (20)
- Pile driving contractor (25)
- Power plant construction (5)
- Trenching contractor (10)
