- Dams, waterways, docks, and other marine construction (9)
- Caisson drilling (1)
- Canal construction (1)
- Dam construction (1)
- Dock construction (10)
- Drainage system construction (15)
- Dredging contractor (6)
- Harbor construction (2)
- Irrigation system construction (5)
- Levee construction (5)
- Marine construction (14)
- Pond construction (7)
- Waterway construction (1)
- Railroad and subway construction (5)
- Cutting of right-of-way (3)
- Railroad and railway roadbed construction (19)
- Athletic and recreation facilities construction (3)
- Golf course construction (5)
- Tennis court construction (3)
- Land preparation construction (32)
- Land leveling (12)
- Land reclamation (27)
- Rock removal (1)
- Timber removal (4)
- Industrial plant construction (13)
- Chemical plant and refinery construction (2)
- Mine loading and discharging station construction (5)
- Oil refinery construction (4)
- Waste disposal plant construction (5)
- Waste water and sewage treatment plant construction (18)
- Blasting contractor, except building demolition (11)
- Earthmoving contractor (38)
- Land clearing contractor (29)
- Pile driving contractor (3)
- Power plant construction (5)
- Trenching contractor (13)
