- Dams, waterways, docks, and other marine construction (13)
- Caisson drilling (1)
- Dam construction (5)
- Dock construction (33)
- Drainage system construction (15)
- Dredging contractor (5)
- Irrigation system construction (15)
- Levee construction (5)
- Marine construction (8)
- Pier construction (4)
- Pond construction (12)
- Waterway construction (5)
- Railroad and subway construction (8)
- Cutting of right-of-way (1)
- Railroad and railway roadbed construction (14)
- Subway construction (3)
- Athletic field construction (4)
- Golf course construction (14)
- Tennis court construction (5)
- Land preparation construction (52)
- Land leveling (7)
- Land reclamation (4)
- Rock removal (9)
- Timber removal (6)
- Industrial plant construction (6)
- Chemical plant and refinery construction (4)
- Waste disposal plant construction (2)
- Waste water and sewage treatment plant construction (15)
- Blasting contractor, except building demolition (18)
- Earthmoving contractor (44)
- Land clearing contractor (29)
- Pile driving contractor (1)
- Power plant construction (5)
- Trenching contractor (78)
