| 1 | JARX | John A. Roebling's Sons Corp., subsidiary of the Colorado Fuel and Iron Corp. | added 4/1953; 7/1954-10/1957; eliminated 7/1958 | | NAKINA |
| 2 | JARX | John A. Roebling's Sons Co. | 7/1935-1/1952; eliminated 4/1953 | | NAKINA |
| 3 | JARX | John A. Roebling's Sons Co. | 4/38-1/52 | | NRHS |
| 4 | JARX | John A. Roebling's Sons Corp., subsidiary of the Colorado Fuel and Iron Corp. | 10/57; eliminated 7/58 | | NRHS |
| 5 | JARX | JOHN A. ROEBLING'S SON CO., COLORADO FUEL & IRON CORP. | | | PWRC |
