Carbon Brush Manufacturers
| St Marys Carbon Co (Saint Marys, PA) |
| St Marys Carbon Co Inc (Brookville, PA) |
| Standard Carbon of Ohio Inc (Steubenville, OH) |
| Supierior Graphite Co (Chicago, IL) |
| Tekmet Llc (Boonton, NJ) |
| Tran Supply Inc (Wilmington, DE) |
| U S Graphite Inc (Saginaw, MI) |
| Ucar Carbon Co Inc (Cleveland, OH) |
