- Dams, waterways, docks, and other marine construction (7)
- Dam construction (2)
- Dock construction (6)
- Drainage system construction (102)
- Dredging contractor (7)
- Irrigation system construction (6)
- Levee construction (1)
- Marine construction (5)
- Pond construction (7)
- Waterway construction (3)
- Railroad and subway construction (2)
- Railroad and railway roadbed construction (9)
- Athletic and recreation facilities construction (1)
- Golf course construction (7)
- Tennis court construction (4)
- Land preparation construction (33)
- Land leveling (7)
- Land reclamation (3)
- Rock removal (2)
- Industrial plant construction (3)
- Chemical plant and refinery construction (2)
- Waste disposal plant construction (2)
- Waste water and sewage treatment plant construction (12)
- Blasting contractor, except building demolition (5)
- Earthmoving contractor (74)
- Land clearing contractor (27)
- Pile driving contractor (3)
- Trenching contractor (55)
