- Dams, waterways, docks, and other marine construction (7)
- Canal construction (1)
- Dam construction (1)
- Dock construction (3)
- Drainage system construction (13)
- Dredging contractor (10)
- Irrigation system construction (9)
- Levee construction (5)
- Marine construction (27)
- Pier construction (1)
- Pond construction (6)
- Waterway construction (3)
- Railroad and subway construction (5)
- Railroad and railway roadbed construction (10)
- Athletic field construction (1)
- Golf course construction (3)
- Tennis court construction (3)
- Land preparation construction (21)
- Land leveling (14)
- Land reclamation (4)
- Rock removal (2)
- Timber removal (16)
- Industrial plant construction (4)
- Oil refinery construction (1)
- Waste disposal plant construction (1)
- Waste water and sewage treatment plant construction (3)
- Blasting contractor, except building demolition (1)
- Earthmoving contractor (49)
- Land clearing contractor (50)
- Pile driving contractor (10)
- Power plant construction (6)
- Trenching contractor (12)
