cyanide can be used to extract gold either in a controlled mill environment or more crudely on rock piles in the open. cyanide "vat leaching" mixes finely crushed ore with a cyanide salt in water. the cyanide binds to the gold ions and makes them soluble in water thereby allowing separation from the rock.
"the process to rescue only one person takes the whole day" said amin simbala father of a buried miner. much of the processing of gold ore involves use of highly toxic mercury and cyanide by
cyanide gold extraction methods. the existing cyanide gold plant in china’s gold mines basically adopts two types of gold extraction process one is a so-called conventional cyanidation process for gold extraction by continuous countercurrent washing with a thickener and the gold is replaced by zinc powder (ccd method and ccf).
the exit from the gold purification room is on the lower level through a door labeled gold casting. follow the catwalks to smelting/floor access. the hallway is labeled 02 foundry. there is a med-kit on a platform next to machinery. stairs down lead to a greenish hall with doors marked gold casting and chemical storage.
gold cyanide solution (leaching gold with cyanide) since the 1890's cyanide has been used to recover gold from gold bearing ores. and today over 115 years later most of the worlds gold is recovered with cyanide playing a large part in the beneficiation of the yellow precious metal.
as part of mknaomi the cia and the special operations division of the army biological laboratory at fort detrick try to develop two suicide pill alternatives to the standard cyanide suicide pill