- Structural steel erection (28)
- Glass and glazing work (41)
- Excavation work (638)
- Wrecking and demolition work (30)
- Installing building equipment (17)
- Special trade contractors, nec (795)
- Athletic and recreation facilities construction (11)
- Coating, caulking, and weather, water, and fireproofing (5)
- Rigging and scaffolding (2)
- Exterior cleaning, including sandblasting (4)
- Home/office interiors finishing, furnishing and remodeling (12)
- Parking facility equipment and maintenance (1)
- Decontamination services (2)
- Building site preparation (6)
