| 1 | MWMX | Golden Leasing | added 7/1985; 1/1994-7/2005; eliminated 1/2008 | | NAKINA |
| 2 | MWMX | Mid-West Mud Co., Inc. | added 1/1978; 1/1980; eliminated 4/1985 | | NAKINA |
| 3 | MWMX | Mid-West Mineral Products, Inc. | added 7/1969; 4/1970; eliminated 10/1971 | | NAKINA |
| 4 | MWMX | Mid-West Mineral Products, Inc. | added 7/69; 4/70; eliminated 10/71 | | NRHS |
| 5 | MWMX | Mid-West Mud Co., Inc. | added 1/78; 1/80; eliminated 4/85 | | NRHS |
| 6 | MWMX | Golden Leasing | 1/94-7/2000 | | NRHS |
| 7 | MWMX | GOLDEN LEASING (MIDWEST MUD COMPANY, INC. {MID-WEST MINERAL PRODUCTS, INC.]) | | | PWRC |
| 8 | MWMX | Midwest Mud (Golden Leasing) | | | RSRV |
| 9 | MWMX | GOLDEN LEASING | | | SCAC4 |
