Discovery of copper in the Keweenaw Peninsula of Michigan had prompted a national demand for mining locations on the Canadian shores of Lake Superior .
By the 1850s , the Province of Canada began to take an interest in its western extremity .
Discovery of copper in the Keweenaw Peninsula of Michigan had prompted a national demand for mining locations on the Province of Canada shores of Lake Superior .
By the 1850s , the Province of Canada began to take an interest in its western extremity .