Elevation: 7,621 feet
Webmaster's note: the USGS spelling for this mine was "Klondyke". I have changed the spelling to conform with documents from the California Journal of Mines and Geology
Klondike Group in Sec. 1, 12, T. 47 N., R. 15 E., and Sec. 6, 7, T. 47 N., R. 16 E. It comprises 15 claims at an elevation of 7000 ft., held by W. B. Broaddus, of Fort Bidwell. The claims on the accompanying map (fig. 1) numbered 2, 3, 4, 5, 19, 30, 43, and 66 give an idea of the location in this group (webmaster’s note: map is missing). The 90-ft. vertical shaft on Klondike claim mentioned in State Mineralogist's Report XXV, has not been used recently. Broaddus is driving an adit level at a point some 600 ft. east of the shaft. This is a cross-cut designed to cut the original discovery vein, on which a 50-ft. shaft and some open cuts had been driven years ago. It is roughly 150 ft. lower in elevation than the collar of the shaft, and has been driven for a distance of 160 ft. Broaddus figures that he has 35 ft. yet to go. He states that the dumps from the shaft and the open cuts contain 1000 tons of $20 ore.
The vein material in the open cuts is largely breccia (probably rhyolitic) partly silicified, and containing seams of vein-quartz from a fraction of an inch to an inch wide, also much iron-oxide. The adit below is in a similar breccia, probably rhyolitic. In the face, the breccia is much silicified and is plentifully sprinkled with minute crystals of pyrite and chalcopyrite.
Machinery has been moved from the 90-ft. shaft to the portal of the new adit-level. A small mill has been built, to which both the compressor engine and the hoist-engine have been belted. Machinery includes the following: 36-hp. steam boiler (fired with wood); 12-hp. Byron Jackson vertical engine; 16-hp. steam hoist; 8-inch by 12-inch Blake crusher; 2 sets rolls, 9-inch diameter by 18 inches long; ball mill, 24 inches by 36 inches; 4 small flotation cells; 6-inch by 6-inch by 6-inch Rex compressor. The mill is said to have a 5-ton daily capacity when grinding to 40-mesh.
Source: Quarterly Chapter of State Mineralogist's Report XXXII, Volume 32, 1936. California Journal of Mines and Geology.