- Dams, waterways, docks, and other marine construction (34)
- Dock construction (23)
- Drainage system construction (11)
- Dredging contractor (19)
- Irrigation system construction (25)
- Marine construction (64)
- Pier construction (1)
- Pond construction (20)
- Railroad and subway construction (3)
- Railroad and railway roadbed construction (13)
- Subway construction (3)
- Athletic and recreation facilities construction (6)
- Athletic field construction (8)
- Golf course construction (16)
- Tennis court construction (22)
- Land preparation construction (29)
- Land leveling (9)
- Land reclamation (6)
- Rock removal (3)
- Timber removal (6)
- Industrial plant construction (20)
- Chemical plant and refinery construction (8)
- Mine loading and discharging station construction (1)
- Waste disposal plant construction (8)
- Waste water and sewage treatment plant construction (19)
- Blasting contractor, except building demolition (12)
- Earthmoving contractor (18)
- Land clearing contractor (47)
- Pile driving contractor (19)
- Power plant construction (12)
- Trenching contractor (7)
