Brunswick Consolidated Gold Mining - Stock Certificate

Unissued Mining Stock. Eureka' seal with small Indian vignette and ships in background. Scarce!!! Nevada County, California. Grass Valley District. Brunswick Consolidated Gold Mining Co. Incorporated in 1890. The property was located on the Mother Lode at Grass Valley and consisted of auriferous quartz in schist and slates. Ore was accessed by a 1250 ft vertical shaft and a 1100 ft decline. Total production between 1893 and 1917 was $1.58 million. (ref. Weed, 1918) The Brunswick Consolidated Mine was a gold quartz mine located near Grass Valley. The vein averaged about 2 ft in width in bunches and short shoots, with the quartz in ribbon structure and containing a good percentage of sulphurets. It was developed by an 800 ft, three-compartment shaft and a number of levels of workings. Power was supplied by a Pelton wheel. The mine was timbered with sawed timbers and planks. It was a wet mine and an 8 inch Cornish pump was operated year round. (12th and 13th Reports of the State Mineralogist, Calif. State Mining Bureau, pgs. 186 and 237).