| 1 | NRBK | NORBROOK INDUSTRIES LTD | | | SCAC4 |
| 2 | NRBN | NORTH-BOUND TRANSPORTATION | | | SCAC3 |
| 3 | NRBO | NOR-BON OIL CO | | | SCAC3 |
| 4 | NRBX | Fruit Growers Express Co. | added 7/1999; 7/2000-7/2005 | | NAKINA |
| 5 | NRBX | Merchants Despatch Transportation Corp. | added 7/1962; 7/1965-1/1994; eliminated 7/1999 | | NAKINA |
| 6 | NRBX | Northern Refrigerator Line, Inc. | added 10/1958; 4/1961; eliminated 7/1962 | | NAKINA |
| 7 | NRBX | New River & Pocahontas Consolidated Coal Co. (previously N.R.&P.C.C.Co.) | added 11/1934; 7/1935-7/1954; eliminated 7/1957 | | NAKINA |
| 8 | NRBX | New River & Pocahontas Consolidated Coal Co. | 4/38-1/52 | | NRHS |
| 9 | NRBX | Northern Refrigerator Line | added 10/58; 4/61 | | NRHS |
| 10 | NRBX | Merchants Despatch Transportation Corp. | 7/65-1/94; eliminated 7/99 | | NRHS |
| 11 | NRBX | Fruit Growers Express Co. | added 7/99; 7/2000 | | NRHS |
| 12 | NRBX | *NEW RIVER & POCAHONTAS CONSOLIDATED COAL CO. [N.R. & P.C.C. CO.] | | | PWRC |
| 13 | NRBX | *(MDTX) MERCHANTS DESPATCH TRANS. CORP. | | | PWRC |
| 14 | NRBX | +FRUIT GROWERS EXPRESS [NORTHERN REFRIGERATOR LINE] | | | PWRC |
| 15 | NRBX | Fruit Growers Express (Merchants Despatch Transportation Corporation) | | | RSRV |
| 16 | NRBX | FRUIT GROWERS EXPRESS COMPANY | | | SCAC4 |
