A TREATISE ON CONCENTRATION OF ALL KINDS OF ORES: INCLUDING THE CHLORINATION PROCESS FOR GOLD-BEARING SULPHURETS, ARSENIURETS, AND GOLD AND SILVER ORES GENERALLY
San Francisco: Office of the Mining and Scientific Press, 1868. First edition. Hardcover. 260 pages illustrated with 120 diagrams on seven large folding plates mounted on guards. A few of the plates with small closed tears. Personal copy of "F.G. Lockhart, Empire City, Coos Bay, Org." with his signature on..... More