- Dams, waterways, docks, and other marine construction (1)
- Dam construction (1)
- Drainage system construction (3)
- Irrigation system construction (2)
- Pond construction (3)
- Waterway construction (1)
- Railroad and subway construction (3)
- Railroad and railway roadbed construction (2)
- Athletic field construction (1)
- Golf course construction (1)
- Tennis court construction (1)
- Land preparation construction (6)
- Land leveling (4)
- Land reclamation (2)
- Industrial plant construction (2)
- Waste disposal plant construction (1)
- Waste water and sewage treatment plant construction (1)
- Blasting contractor, except building demolition (5)
- Earthmoving contractor (14)
- Land clearing contractor (3)
- Power plant construction (1)
- Trenching contractor (22)
