Coleman Township Cobalt Timiskaming Ontario Crown Reserve Mine Mining 1910 Real Photo Postcard

The Crown Reserve Mining Company was a prominent operation in Ontario's historic Cobalt silver camp, incorporated in 1906. Situated uniquely on an island within Kerr Lake, its mines became exceptionally productive, extracting significant quantities of silver and cobalt from rich deposits discovered during the region's early 20th-century mineral rush. The depicted structures, including the headframe and processing facilities, are characteristic of early industrial mining infrastructure built in remote areas.