| 1 | RCOX | Union Tank Car Co. | added 10/2003; 7/2005 | | NAKINA |
| 2 | RCOX | BP Products North America Inc. | added 1/2003; eliminated 10/2003 | | NAKINA |
| 3 | RCOX | Amoco Oil Co. | added 7/2000; 7/2000; eliminated 1/2003 | | NAKINA |
| 4 | RCOX | Arco Products Co. | eliminated 7/2000 | | NAKINA |
| 5 | RCOX | Arco Products Co., Division of Atlantic Richfield Co. | added 10/1991; 1/1994 | | NAKINA |
| 6 | RCOX | Arco Products Co., Division of Atlantic Richfield Co. | added 10/91; 1/94 | | NRHS |
| 7 | RCOX | Arco Products Co. | eliminated 7/2000 | | NRHS |
| 8 | RCOX | Amoco Oil Co. | added 7/2000; 7/2000 | | NRHS |
| 9 | RCOX | UNION TANK CAR CO., LESSEE BP PRODUCTS NORTH AMERICA INC. [ARCO PRODUCTS CO., DIV OF ATLANTIC RICHFIELD COMPANY] | | | PWRC |
| 10 | RCOX | Arco Products | | | RSRV |
| 11 | RCOX | UNION TANK CAR COMPANY | | | SCAC4 |
