- Dams, waterways, docks, and other marine construction (22)
- Caisson drilling (2)
- Canal construction (1)
- Dam construction (2)
- Dock construction (12)
- Drainage system construction (28)
- Dredging contractor (8)
- Harbor construction (1)
- Irrigation system construction (22)
- Levee construction (1)
- Marine construction (60)
- Pier construction (1)
- Pond construction (26)
- Waterway construction (2)
- Railroad and subway construction (7)
- Railroad and railway roadbed construction (12)
- Athletic and recreation facilities construction (6)
- Athletic field construction (2)
- Golf course construction (18)
- Tennis court construction (6)
- Land preparation construction (110)
- Land leveling (10)
- Land reclamation (7)
- Rock removal (5)
- Timber removal (33)
- Industrial plant construction (12)
- Chemical plant and refinery construction (3)
- Waste disposal plant construction (3)
- Waste water and sewage treatment plant construction (7)
- Blasting contractor, except building demolition (12)
- Earthmoving contractor (74)
- Land clearing contractor (107)
- Pile driving contractor (13)
- Power plant construction (10)
- Trenching contractor (9)
