- A & B Construction Corp
- Advanced Boring & Microtnnllng
- Affholder Inc
- Affholder Inc
- Affholder Inc
- Blankenship Contracting Inc
- Bradshaw Construction Corp
- Capitol Tunneling Inc
- Caron Pipe Jacking Inc
- Caron Pipe Jacking Inc
- Earl's Plumbing & Drain Clean
- Florida Road Boring Inc
- Huxted Tunneling
- Kassouf Co
- Keith KERR & Son Boring
- Kiewit Constructors Inc
- M & P Pipe Jacking Corp
- Magorian Mine Svc
- Mancini Construction Inc
- Matthew E Manning
- Mc Nally Tunneling Corp
- SAS Stressteel Inc
- Trammel Inc
- Wirth Service Inc
