Lost Mines of Southern California: Calico Mines
Years of Operation: Calico was the site of Californias biggest silver strike. The boom period began in 1881 and lasted through the mid 1890s when silver lost its value. B orate mining kept the town alive, though most of the miners had left, even through the panic of 1906. In 1917 cyanide was used to recover silver from the Silver King mine dumps. During the early 1930s a small operation called the Zenda