- Dams, waterways, docks, and other marine construction (7)
- Dam construction (4)
- Dock construction (18)
- Drainage system construction (81)
- Dredging contractor (8)
- Irrigation system construction (25)
- Marine construction (7)
- Pier construction (1)
- Pond construction (6)
- Waterway construction (3)
- Railroad and subway construction (3)
- Railroad and railway roadbed construction (9)
- Athletic and recreation facilities construction (6)
- Golf course construction (12)
- Tennis court construction (14)
- Land preparation construction (39)
- Land leveling (4)
- Land reclamation (5)
- Rock removal (2)
- Timber removal (1)
- Industrial plant construction (8)
- Mine loading and discharging station construction (1)
- Oil refinery construction (1)
- Waste disposal plant construction (7)
- Waste water and sewage treatment plant construction (16)
- Blasting contractor, except building demolition (6)
- Earthmoving contractor (34)
- Land clearing contractor (33)
- Pile driving contractor (2)
- Power plant construction (1)
- Trenching contractor (27)
