At the Delamar Mine, Nevada, the barrel-chlorinating process was installed in 1895 and soon later discarded in favour of fine grinding and cyaniding.
12.
Cyaniding involved dissolving the gold out of the pulp with potassium cyanide and trickling the resulting solution through zinc shavings to which the gold attaches and smelting into bullion.
13.
The Croydon Consols cyaniding plant operated between 1897 and 1904, during which period 9, 500 tons of tailings were treated for a yield of 7, 000 ounces of gold bullion.
14.
The place demonstrates a number of stages in the development of Croydon Goldfield-British investment in ore crushing, then cyaniding to fully extract any remaining gold once a permanent water supply had been secured.
15.
Hester became a writer and, in 1902, married Henry Forbes Julian, a mining engineer, founder of the Royal Automobile Club and co-writer of " Cyaniding Gold and Silver Ores ".
16.
In 1932 Mount Coolon had the highest gold production in Queensland and the Mount Coolon Gold Mines No Liability Company, who had bought out Barclay, had erected a large reduction and cyaniding plant 2.3 km south of the town.
17.
The Pyrites Chlorination Works is a rare, if not unique, survivor of its kind, exhibiting in its layout and foundation the latest chlorination process technology before the introduction of the cyanide process; then its takeover and adaptation to the cyaniding process.
18.
The Venus State Battery is important in demonstrating the principal characteristics of a crushing, concentrating and cyaniding mill and its setting on the banks of Gladstone Creek in the once flourishing suburb of Millchester exhibits aesthetic characteristics that are valued by sections of the community.
19.
I explain that the terrorists are coming back to finish the job here, where they were interrupted; that they've been cyaniding dogs and Sarin-ing bunnies in Afghanistan, and that I've even heard of neighbors fashioning safe rooms with special lighting to kill viruses.
20.
In the first year of cyaniding, 510 tons of tailings were treated for a yield of 668 ozs of gold bullion, but production increased thirteenfold in 1903 so that it was the second largest cyaniding treatment plant on the field-6, 565 tons of tailings were treated for 5, 059 ozs of gold bullion.
