An Unabridged, Digitally Enlarged Printing Of The Fifth Edition, To Include Over 300 Figures: PART ONE - Gold As A Metal - Gold Mining And Its Results - Physical And Geological Features Of Gold Producing Countries - Chemical Examionation Of Gold Ores - Hydraulic Gold Mining And Dredging - PART TWO - The Milling Of Gold Ores - Stamp Batteries - Amalgamation - The Working Of The Gold Mill - Mills In Operation - Other Crushing Appliances - Statistics Of Milling - PART THREE - The Treatment Of Gold-Bearing Ores - Concentration - The Roasting Of Rebellious Ores - The Roasting Of Pyritic - Smelting Of Pyritic Ores - PART FOUR - The Hydro-Metallurgy - Chlorination, Lixiviation, And Precipitation - Later Processes Of Chlorination - Electro-Metallurgy Of Precious Metals - PART FIVE - The Cyanide Process Of Gold Extraction - Erection Of A Cyanide Plant - The Siemens-Halske Cyanide Process - The Cyanide Process In Operation At Various Works - The Chemistry Of The Cyanide Process - PART SIX - The Melting And Assaying Of Gold - The Cupelling, Parting, And Refining Of Gold Bullion - Comprehensive Index