Commonwealth Mine

The story

Prospectors first staked claims in the Hayden Lake Mining District in 1892, uncovering veins of copper, silver, and gold roughly 2,500 feet up in the mountains of Kootenai County. Over the following decades, miners carved out a complex underground network consisting of a 300-foot vertical shaft and up to a dozen interconnecting tunnels that extended hundreds of feet into the bedrock. Outfits like Commonwealth Silver Co. and later Nighthawk Silver-Lead Mining Co. periodically reworked the ground, blasting into quartz veins before operations finally ground to a halt.

The remote operation relied heavily on an unlikely partner: the Ohio Match Company logging railway. In the 1920s, Ohio Match built a rail network through the heavily forested Hayden Creek drainage to harvest timber for matchsticks. That same steel track provided the mine with vital transport, allowing crews to haul heavy equipment up the valley and send raw mineral loads back down toward smelters.

Today, the heavy machinery is gone and the railway tracks have long been removed. swallowed by the Coeur d'Alene National Forest, the site sits quietly beneath a thick canopy of cedar and pine, marked primarily by faded forest grades, tailing piles, and cut-banks from a vanished industrial era.