| Business | Phone |
| Experimental Research & Dev Co 17041 State Highway 49, Nevada City 95959 | (530) 265-4890 |
| Sierra Metal Fabricators 529 Searls Ave, Nevada City 95959 | (530) 265-4591 |
| Foothill Manufacturing 18895 State Highway 49, Nevada City 95959 | (530) 265-8324 |
| Jerry's Tooling Nevada City 95959 | (530) 265-4713 |
| Schmidt Tool Co 420 Gold Flat Rd, Nevada City 95959 | (530) 478-1115 |