Industries List
| Name | Province | City |
|---|---|---|
| Maplehurst North York - Wonder Brands Inc. | Ontario | North York |
| Maplehurst Regina - Wonder Brands Inc. | Saskatchewan | Regina |
| Marden-Wild - Marden-Wild of Canada | Nova Scotia | Amherst |
| Marine Recycling Corporation - Marine Recycling Corporation | Ontario | Port Colborne |
| Maritime House Metals Inc - Napanee Facility - Maritime House Metals ULC | Ontario | Napanee |
| Maritime Hydraulic Repair Centre (1997)LTD - Maritime Hydraulic Repair Centre (1997) Ltd | New Brunswick | Moncton |
| MARK PEMBINA 02-35-046-02W5 - Inplay Oil Corp. | Alberta | Mark Pembina |
| Markerville Compressor Station #1 - HARVEST OPERATIONS CORP. | Alberta | Dickson |
| Markham - Dynamix inc. | Ontario | Markham |
| Markham BU - Creation Technologies Ltd. | Ontario | Markham |
