| 1 | KSMX | Kosmos Cement Co., Inc. | added 4/1981; eliminated 1/1989 | | NAKINA |
| 2 | KSMX | The Flintkote Co./Kosmos Cement Division | added 4/1978; 1/1980; eliminated 4/1981 | | NAKINA |
| 3 | KSMX | The Flintkote Co., Eastern Cement Region | added 4/1976; eliminated 4/1978 | | NAKINA |
| 4 | KSMX | The Flintkote Co., Diamond Kosmos Cement Division | added 4/1972; 1/1975; eliminated 4/1976 | | NAKINA |
| 5 | KSMX | Kosmos Portland Cement Co. | 4/1947 (not listed); 1/1950-4/1970; eliminated 4/1972 | | NAKINA |
| 6 | KSMX | Kosmos Portland Cement Co. | 1/52-4/70; eliminated 4/72 | | NRHS |
| 7 | KSMX | The Flintkote Co., Diamond Kosmos Cement Division | added 4/72; 1/75; eliminated 4/76 | | NRHS |
| 8 | KSMX | The Flintkote Co., Eastern Cement Region | added 4/76; eliminated 4/78 | | NRHS |
| 9 | KSMX | The Flintkote Co./Kosmos Cement Division | added 4/78; 1/80; eliminated 4/81 | | NRHS |
| 10 | KSMX | Kosmos Cement Co., Inc. | added 4/81; eliminated 1/89 | | NRHS |
| 11 | KSMX | KOSMOS CEMENT CO. (FLINTKOTE CO.) | | | PWRC |
| 12 | KSMX | Kosmos Cement | | | RSRV |
| 13 | KSMX | KOSMOS PORTLAND CEMENT CO | | | SCAC3 |
| 14 | KSMX | Kosmos Cement Co., Inc. | | USA | TRAFFIC |