Industries List
| Name | Province | City |
|---|---|---|
| 3M Chicoutimi - 3M Canada Company | Quebec | Chicoutimi |
| 3M Morden Manufacturing - 3M Canada Company | Manitoba | Morden |
| 4 CDSB - Garrison Petawawa - DEPARTMENT OF NATIONAL DEFENCE | Ontario | Petawawa |
| 4 CDSB / BS 4 Div C Petawawa - CTSE Cedar Springs RTA - DND/ MDN | Ontario | Cedar Springs |
| 4 CDSG/ GS 4 Div C - CTSE Burwash RTA (Petawawa) - DND/ MDN | Ontario | Sudbury |
| 4 Wing Cold Lake - DEPARTMENT OF NATIONAL DEFENCE | Alberta | Cold Lake |
| 4 Wing Cold Lake- PLER - DEPARTMENT OF NATIONAL DEFENCE | Alberta | Cold Lake |
| 4-23-34-23W4 - Ember Resources Inc. | Alberta | Calgary |
| 4-30-29-19 W4M - Bearspaw Petroleum Ltd. | Alberta | Drumheller |
| 4-33 Wildmere - Gear Energy Ltd. | Alberta | Wildmere |
