MacDonald Mines Exploration Ltd., a mineral exploration company, engages in the acquisition, exploration, and development of mineral properties in Canada. The company explores for gold, silver, copper, cobalt, nickel, and rare earth element deposits. It owns 100% interest in the Scadding-Powerline-Jovan property that covers an area of 19,380 hectares located to the east of Sudbury in Northern Ontario. The company was formerly known as MacDonald Mines Limited. MacDonald Mines Exploration Ltd. was incorporated in 1936 and is headquartered in Toronto, Canada.