1 | SWPX | Shawinigan Chemicals Ltd. | 7/1930-10/1966; eliminated 10/1969 | | NAKINA |
2 | SWPX | Gulf Oil Canada Ltd., Shawinigan Chemicals Division | added 10/1969; eliminated 1/1970 | | NAKINA |
3 | SWPX | Gulf Oil Canada, Ltd. | added 1/1970; 4/1970; eliminated 4/1972 | | NAKINA |
4 | SWPX | Southwestern Portland Cement Co. | added 10/1991; eliminated 10/1993; 1/1994-7/2005 (not listed) | | NAKINA |
5 | SWPX | Shawinigan Chemicals Ltd. | 4/38-10/66; eliminated 10/69 | | NRHS |
6 | SWPX | Gulf Oil Canada Ltd., Shawinigan Chemicals Division | added 10/69; eliminated 1/70 | | NRHS |
7 | SWPX | Gulf Oil Canada, Ltd. | added 1/70; 4/70; eliminated 4/72 | | NRHS |
8 | SWPX | Southwestern Portland Cement Co. | added 10/91; eliminated 10/93; 1/94-7/2000 | | NRHS |
9 | SWPX | *GULF OIL CANADA LTD., SHAWINIGAN CHEMICALS DIV. | | | PWRC |
10 | SWPX | +SOUTHWESTERN PORTLAND CEMENT COMPANY | | | PWRC |
11 | SWPX | Southwestern Portland Cement | | | RSRV |