Cobalt Mines Hockey League

The Cobalt Mines Hockey League was played in Northern Ontario from 1912 to 1914. The Cobalt O'Brien Mines won the league in 1914.

Participating teams

 * 1912-13: Cobalt O’Brien Mines, Cobalt McKinley Mines, Cobalt Lake
 * 1913-14: Cobalt O’Brien Mines, Cobalt Lake, Cobalt McKinley Mines, Nipissing