| Communication Equipment |
| Comtrol International |
| Lockheed Martin |
| Pyott-Boone Electronics |
| Varis |
| Matrix |
|
|
| Environmental & Conveyor Belt Monitoring |
| ADI |
| Appalachian Electronics Instruments |
| Amerex Corporation |
| BWI / Eagle Inc. |
| Lester Electrical |
| Pyott-Boone Electronics |
| Mefcor, Inc |
|
|
| Safety Equipment |
| Davis Inotek Instruments, LLC |
| Task Force Tips (TFT) |
| Mine Safety Appliances Co. |
| Ocenco, Inc. |
|
|
| Power Equipment |
| Benshaw, Inc. |
| Line Power / Federal Pacific |
| J & R Manufacturing, Inc |
| Mining Controls, Inc. |
| Baldor |
| SMC Electrical Products, Inc. |
|
|
| Motor Controls |
| Cableform, Inc. |
| Eaton / Cutler Hammer |
| Micron Industries Corporation |
| Saftronics, Inc. |
| Toshiba International Corporation |
| Cooper Bussman Co. |
|
|
| Lighting |
| Mining Contols, Inc. |
| Ocenco, Inc. |
| SMC Electrical Products, Inc. |
|
|
| Misc Test Equipment & Supplies |
| Bluefield Manufacturing, Inc. |
| Donaldson Co., Inc. |
| EIT Corporation |
| Eveready Battery Co., Inc. |
| Harrington Hoists & Cranes, Inc. |
| Lester Electrical |
| Ocenco, Inc. |
| Simpson Electric Co. |
| Spraying Systems Co. |
| Triplett Corporation |
| Tyco Electronics ( Raychem) |
| Supperior Signals Inc. |
