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CONTENTS.
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Part I—CALIFORNIA.
Section I.—Geological Features : Gold-bearing Quartz Lodes; Auriferous Slates; Diluvial Gold-bearing Gravels and Deep Leads.
Section
II.—Mining Operations : Sinking of Shafts ; Driving Levels ; Pumps ;
Air Compressors ; Percussive Rock-boring Machines ; Diamond Drills ;
Ventilation.
Section III.—Boilers ; Winding or Hoisting Machinery ; Safety Catches and Safety Hooks.
Section IV.—Mining and Crushing Auriferous Ores.
Section V.—Various Methods for Treating Crushed Quartz ; Retorting.
Section
VI.—Reduction of Pyrites : (a.) Common Roasting and Grinding ; (b.)
Chlorination ; (c.) Other Processes ; (d) Sampling and Assaying of Ores.
Section VII.—(a.) Hydraulic Mining of Auriferous Gravels ; (b.) Drift Mining by means of Shafts and Tunnels.
Appendix.
A, Novel Treatment of Poor Copper Ores. B. Asbestos and its Uses. C. Wages. D. Mine Timber. E. Mining Laws. F. Schools of Mines.
Part ii—NEVADA.
The Comstock Lode. Section I.—Geological Features. Section II.—Mining Operations.
Section
III.—Pumping Machinery ; Ventilating Machines, or " blowers " and
exhausters. Section IV.—Crushing Mills: (a.) Concentration and
Amalgamation ; (6.) Modes of Treatment. Section V.—Tailings. Section
VI—The Sutro Tunnel.
Appendix A. Wages. B. Mining and other Laws. C. Minerals and Ores. D, Mine Timber.
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