| Business | Phone |
| Precision Engineering 9217 Bobb Ave, St Louis 63114 | (314) 428-1388 |
| Midcoast Aviation Inc 5995 James S Mcdonnell Blvd, St Louis 63134 | (314) 731-7111 |
| Kemco Tool & Machine Co 3616 Scarlet Oak Blvd, St Louis 63122 | (636) 343-1168 |
| Essex Cryogenics Of Missouri 8007 Chivvis Dr, St Louis 63123 | (314) 832-8077 |
| Essex Industries Inc 7700 Gravois Rd, St Louis 63123 | (314) 832-4500 |
| Essex Manufacturing Div 6 Sunnen Dr, St Louis 63143 | (314) 644-3000 |