The extraction of gold or silver by dissolving it in a weak solution of alkali metal cyanide. Delivery: The tender of the actual commodity such as silver or gold against a short position in futures during the period allowed by the futures contract.
A method of extracting gold or silver by it in a weak solution of sodium cyanide. Return to the top of the page. DE-WATER : The process of removing water from a flooded mine.
A process of extracting gold and silver as cyanide slimes from their ores by treatment with dilute solutions of potassium cyanide or sodium cyanide. The slimes are subsequently fused and cast into ingots or bullion.
a method of extracting gold or silver by dissolving it in a weak solution of sodium or potassium cyanide
A method of extracting exposed gold or silver grains from crushed or ground ore by dissolving it in a weak cyanide solution. This may be carried out in agitated tanks in a mill or on ore heaps outside.
A method of extracting exposed gold or silver grains from crushed or ground ore by dissolving it in a weak cyanide solution. May be carried out in tanks inside a mill or in heaps of ore out of doors.
Process in which the precious metals are extracted from the processed ore by leaching with a cyanide solution
The process in which a solution of potassium cyanide is passed through crushed ore to remove the gold. This process is not used when the ore contains copper.