- Plumbing, heating, air-conditioning (12)
- Painting and paper hanging (2)
- Electrical work (12)
- Masonry and other stonework (1)
- Carpentry work (1)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (2)
- Water well drilling (1)
- Structural steel erection (1)
- Excavation work (6)
- Wrecking and demolition work (1)
- Special trade contractors, nec (8)
