""A Treatise On Concentration Of All Kinds Of Ores"" is a book written by Guido Kustel in 1868. The book provides a comprehensive guide to the concentration of various types of ores, including gold-bearing sulphurets, arseniurets, and gold and silver ores in general. The author explains the chlorination process for the extraction of gold from these ores, which involves the use of chlorine gas. The book also covers other methods of concentration, such...