| ABP Induction |
| Active Brass |
| Airmatic, Inc. |
| Air Products |
| Allied Mineral Products |
| All Quality Aluminum |
| Asbury Graphite |
| Behler Patterns, Inc. |
| Benny Heater Company |
| Benton Foundry |
| Blue Ridge Pressure Castings |
| Boose Aluminum Foundry |
| Bridesburg Foundry |
| Broad Services |
| Bruker |
| Colonial Metals |
| Conestoga Foundry Supply |
| Customized Energy Solutions |
| Effort Foundry |
| ELK Environmental |
| Ervin Industries |
| GW Bryant Core Sands |
| Hamburg Manufacturing, Inc. |
| Hatten and Company |
| Heraeus Electro-Nite |
| Hickman Williams & Company |
| Inductotherm Corp. |
| J. Kuhl Metals Co. |
| Kore Mart |
| Lancaster Foundry Supply |
| Majestic Fire Apparel |
| McWane Ductile, New Jersey |
| ProFound Alloys |
| Quigley Crucible |
| Schaefer Industrial Ceramics |
| Solar Atmospheres |
| Spring City Electrical Mfg. |
| Swope & Bartholomew |
| Tech Cast LLC |
| Temple Aluminum |
| Trega Corporation |
| Unimin |
| United Refractories |
| Victaulic |
| Weatherly & Hazleton Casting |
| Weaver Materiel |
| West Pattern |
