The Rio Tinto, Mammoth, Magnet, Mexican, Republic, Kingston and Toga 1,2 and 3. According to historical documentation from 1890-1908 mining produced Cu-Pb-Zn from a 200 foot shaft with a 9 foot cross cut and 70 foot inclined shaft. Commodities: Copper, Gold, Lead, Silver, Zinc. Location: California, USA.Web