Industries List
| Name | Province | City | |
|---|---|---|---|
| Mantario Oil Battery 13-32-027-27W3 - Canadian Natural Resources Limited | Saskatchewan | Eyre | |
| Mantario Oil MWP 08-3-026-27W3 - Baytex Energy Ltd | Saskatchewan | Mantario | |
| Manufacturier de Système d' Uréthane (liquide) - Huntsman Building Solutions (Canada) Inc. | Quebec | Boisbriand | |
| Manyberries OB 16-36 - City of Medicine Hat | Alberta | Medicine Hat | |
| MAPEI Inc. - Mapei Inc. | Quebec | Laval | |
| MAPLE COMP STN - TransCanada PipeLines Limited | Ontario | Vaughan | |
| Maple Glen Compressor Station 14-24-036-17W4 - Canadian Natural Resources Limited | Alberta | Leo | |
| Maple Glen Compressor Station 15-36-036-16W4 - Canadian Natural Resources Limited | Alberta | Halkirk | |
| Maple Leaf Foods - Brandon - Maple Leaf Foods Inc. | Manitoba | Brandon | |
| Maple Leaf Foods - Brantford - Maple Leaf Foods Inc. | Ontario | Brantford |
