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 |
