- Dams, waterways, docks, and other marine construction (31)
- Caisson drilling (1)
- Dam construction (1)
- Dock construction (13)
- Drainage system construction (34)
- Dredging contractor (14)
- Harbor construction (3)
- Irrigation system construction (28)
- Marine construction (81)
- Pier construction (1)
- Pond construction (33)
- Railroad and subway construction (9)
- Railroad and railway roadbed construction (7)
- Athletic and recreation facilities construction (3)
- Athletic field construction (3)
- Golf course construction (30)
- Tennis court construction (7)
- Land preparation construction (74)
- Land leveling (12)
- Land reclamation (3)
- Rock removal (6)
- Timber removal (4)
- Industrial plant construction (8)
- Oil refinery construction (2)
- Waste disposal plant construction (4)
- Waste water and sewage treatment plant construction (30)
- Blasting contractor, except building demolition (4)
- Earthmoving contractor (47)
- Land clearing contractor (42)
- Pile driving contractor (11)
- Power plant construction (2)
- Trenching contractor (53)
