| source | facility | location |
| 0247040014 F007 | ELYRIA FOUNDRY | ELYRIA |
| 0247040014 P017 | ELYRIA FOUNDRY | ELYRIA |
| 0285010001 F020 | THE QUALITY CASTINGS COMPANY | ORRVILLE |
| 0285010001 F021 | THE QUALITY CASTINGS COMPANY | ORRVILLE |
| 0285010034 F029 | ROSS SAND CASTING INDUSTRY, LLC | ORRVILLE |
| 0306000133 P914 | THE MINSTER MACHINE COMPANY | MINSTER |
| 0306000133 P928 | THE MINSTER MACHINE COMPANY | MINSTER |
| 0306010004 F010 | ST. MARYS FOUNDRY INC. | ST. MARYS |
| 0546000001 Z002 | QUINCY CASTINGS, INC. | QUINCY |
| 0660010101 F018 | BURNHAM FOUNDRY | ZANESVILLE |
| 1431233202 F006 | HARRISON IRONWORKS | HARRISON |
| 1576050200 P023 | SHUT D - OHIO CAST PRODUCTS | CANTON |