| 1 | ZCAX | Zinc Corp. of America (previously St. Joe Minerals Corp., reporting marks SJMX) | added 10/1988; 1/1994-7/2000; eliminated 10/2002; 7/2005 (not listed) | | NAKINA |
| 2 | ZCAX | Zinc Corp. of America (previously St. Joe Minerals Corp., reporting marks SJMX) | added 10/88; 1/94-7/2000 | | NRHS |
| 3 | ZCAX | ZINC CORPORATION OF AMERICA (PREVIOUSLY ST. JOE MINERALS CORP., REPORTING MARK SJMX) | | | PWRC |
| 4 | ZCAX | Zinc Corporation of America | | | RSRV |
| 5 | ZCAX | ZINC CORPORATION OF AMERICA | | | SCAC4 |