Chapter VII Gold Extraction
(SECONDARY PROCESSES AND LIXIVIATION)
Choosing the plant—-Various ores and their constituents—Amalgamation—Various concentrators—Percussion tables—Frue vanner—Pan concentration—Simultaneous grinding and amalgamating condemned—Watson and Denny pan—Good machines often condemned—Procedure in ore treatment—Duncan pan—Calcining—Rotatory amalgamator—Steaming concentrates—Dry amalgamation—Sulphuric acid and sickened mercury—Amalgamation without overflow—Experiments—Steam as an agent in gold extraction—Lixiviation by chlorine—Various processes—Mount Morgan—Cyanide process.
pp. 87-99