Note XXXII-31 — Chapter XXXII · INDUSTRIAL PROGRESS. 1800-1887.
Reading edition
Combined with lead and copper, and also as a sulphide of silver. Materials convenient for working them were at hand. The Central Am. Mining Co. operating on the locality sold between 1858 and 1865 ore and bar silver to the amount of 621,000 ounces, worth over $700,000. U. S. Gov. Doc., H. Ex. Doc., Cong. 40, Sess. 2, pt 1, 212-14; Squier's Cent. Am., 526; U. S. Land Off. Rep., 1867, 116-17, 131-2, 188-90; Nic., Gaceta, Apr. 28, 1866.