Boulder County, in north-central Colorado along the east side of the Front Range, ranks ninth amoung the gold producing counties of Colorado. Through 1959, Boulder County was credited with an output of about 1,048,200 ounces of gold.
Jamestown is in the Central district. Nine miles northwest of Boulder there were many area mines. Lefthand Creek, north of Gold Hill, Bummers Gulch, Coon Trail, North Beaver and South Boulder Creeks, southeast of Caribou contain placer gold. James Creek above Jamestown contains placer gold. Central Gulch, west of Jamestown contains placer gold. Upper Fourmile Creek, northwest of Sugarloaf contains placer gold. It had a total production of 207,000 gold ounces. There are many area mines that produced gold in pyrite and telluride minerals. The Jamestown, Gold Hill and Ward area mines all produced lode gold.
The Ward district is 9-13 miles northwest of Boulder. It covered 12 square miles in headwaters of Lefthand and Fourmile Creeks. The old camps of Sunset and Copper Rock, more than 50 lode mines in area, had a total production of 172,000 ounces of lode gold. The Niwot and Columbia mines were the largest producers of lode gold. In east part of district, many mines produced gold in tellurides.
The Grand Central, in the Jamestown district, was well known for its tellurides. "One hundred pound lots of ore have been sold at the rate of $7000/ton, and ton lots averaging $170 while assays have been had as high as $160,000 per ton." This is quite a substantial value especially with mineral prices being much lower back when these numbers were laid out.