- Dams, waterways, docks, and other marine construction (18)
- Dam construction (1)
- Dock construction (3)
- Drainage system construction (15)
- Dredging contractor (8)
- Irrigation system construction (13)
- Marine construction (17)
- Pond construction (18)
- Waterway construction (4)
- Railroad and subway construction (2)
- Cutting of right-of-way (3)
- Railroad and railway roadbed construction (5)
- Subway construction (1)
- Athletic and recreation facilities construction (2)
- Athletic field construction (2)
- Golf course construction (10)
- Tennis court construction (6)
- Land preparation construction (40)
- Land leveling (13)
- Land reclamation (4)
- Rock removal (7)
- Timber removal (52)
- Industrial plant construction (7)
- Waste disposal plant construction (1)
- Waste water and sewage treatment plant construction (13)
- Blasting contractor, except building demolition (11)
- Earthmoving contractor (34)
- Land clearing contractor (68)
- Pile driving contractor (2)
- Power plant construction (6)
- Trenching contractor (14)
