- Structural steel erection (34)
- Glass and glazing work (47)
- Excavation work (132)
- Wrecking and demolition work (23)
- Installing building equipment (16)
- Special trade contractors, nec (631)
- Athletic and recreation facilities construction (15)
- Coating, caulking, and weather, water, and fireproofing (2)
- Rigging and scaffolding (4)
- Exterior cleaning, including sandblasting (1)
- Home/office interiors finishing, furnishing and remodeling (14)
- Parking facility equipment and maintenance (1)
- Building site preparation (3)
