Northern Customs Concentrators, Limited, built this 80 - stamp mill at mileage 104 on the T & NO Railway in 1913. It processed ore from several Cobalt area mines until 1922 when it was purchased by M.J. O'Brien Limited.
Following directions from my GPS, I arrived at the end of what appeared to be a long driveway. The white house in the distance looked as though it might be someone’s home. I hesitated, looking over the place and deciding whether or not to drive in when I noticed that the power lines leading into the property had been cut from the poles. This made my decision for me.
In operation between 1934 and 1988, Ross Mine produced over 1 million ounces of gold. It was owned, at closing, by Pamour Porcupine Mines, Ltd.
UPDATE July 5, 2012: Thanks to the heads-up from Jay's comment below, I discovered that the property is about to see action again. Guardians of Gold plan to reprocess the tailings behind the mine to remove trace amounts of gold.
Cobalt is a town founded on silver mining. In 1903, while constructing the railway, silver was discovered, and a town was born. 400 mines later, there isn't much happening in Cobalt today, but there's LOTS to explore.
Additional information available on Wikipedia.
Opened in 1926, this mine covered an area of approximately 8,200 acres. The mine closed in 1993 owing over $87,000 in taxes for the property itself, and with the parent company owing over $700,000 overall.
Currently there is a problem with acid drainage from the mine into the nearby river.
Worthington was incorporated as a mining town in 1892. On October 4, 1927, at 5:50 am, the mine, and part of the town collapsed into a fault line. There were no deaths, however, thanks to the vigilance of the foreman who evacuated the town the night before, having noticed abnormal shifts in the rock.
Some additional information available at Wikipedia.