- Dams, waterways, docks, and other marine construction (5)
- Dam construction (4)
- Drainage system construction (4)
- Dredging contractor (2)
- Irrigation system construction (2)
- Pond construction (1)
- Railroad and subway construction (1)
- Railroad and railway roadbed construction (2)
- Tennis court construction (1)
- Land preparation construction (7)
- Land leveling (2)
- Land reclamation (1)
- Industrial plant construction (1)
- Waste water and sewage treatment plant construction (5)
- Blasting contractor, except building demolition (1)
- Earthmoving contractor (27)
- Land clearing contractor (5)
- Power plant construction (3)
- Trenching contractor (4)
