- Structural steel erection (72)
- Glass and glazing work (52)
- Excavation work (394)
- Wrecking and demolition work (83)
- Installing building equipment (32)
- Special trade contractors, nec (1354)
- Athletic and recreation facilities construction (16)
- Coating, caulking, and weather, water, and fireproofing (10)
- Service station equipment (6)
- Rigging and scaffolding (8)
- Exterior cleaning, including sandblasting (8)
- Home/office interiors finishing, furnishing and remodeling (26)
- Decontamination services (2)
- Building site preparation (20)
