Lista de empresas
| Name | Province | City |
|---|---|---|
| Martin Hills Core 16-27 - Headwater Exploration Incorporated | Alberta | Martin Hills |
| Martinrea Industrial Canada - Martinrea Industrial Canada | Ontario | Woodbridge |
| MARWAYNE OB 01-26-053-02W4 - Cenovus Energy Inc. | Alberta | Lloydminster |
| Marwayne Oil SWB 08-29-053-02W4 - Canadian Natural Resources Limited | Alberta | Lea Park |
| MARWOOD BROOKFIELD - Marwood Ltd. | Nueva Escocia | Brookfield |
| MARWOOD JAMESTOWN - Marwood Ltd. | Terranova y Labrador | Jamestown |
| MARWOOD TRACYVILLE - Marwood Ltd. | Nuevo Brunswick | Tracyville |
| Mary River Mine Site - Baffinland Iron Mines | Nunavut | Mary River |
| Mary's Harbour Diesel Generating Station - Newfoundland and Labrador Hydro | Terranova y Labrador | Mary's Harbour |
| Masonite International Corporation d/b/a Harring Doors - Masonite International Corporation | Ontario | London |
