| 1 | USTX | Union Starch & Refining Co. | 7/1930-7/1965; eliminated 7/1966; eliminated 10/1966 | | NAKINA |
| 2 | USTX | General American Transportation Corp. | added 10/1966; 10/1966; eliminated 1/1968; 4/1970 | | NAKINA |
| 3 | USTX | Union Starch & Refining Co. | 4/38-7/65; eliminated 7/66; eliminated 10/66 | | NRHS |
| 4 | USTX | General American Transportation Corp. | added 10/66; 10/66; eliminated 1/68; 4/70 | | NRHS |
| 5 | USTX | *UNION STARCH & REFINING CO. (GENERAL AMERICAN TRANSPORTATION CORP.) | | | PWRC |
| 6 | USTX | *USX CORP. | | | PWRC |
