Eureka! X-rays detect gold faster and more accurately
The current industry standard used by mining companies for valuing gold ore is fire-assay, which is time consuming, requires the use of heavy metals such as lead, and involves heating samples to temperatures of up to 1,200 C (2,192 F).
Cornstarch Replaces Cyanide In Gold Extraction Popular
Bound up in consumer electronics, jewelry and the ores that it comes from, gold is difficult to extract, and most modern processes do it with a highly toxic combination of cyanide salts. The cyanide leaches the gold out, but the cyanide can seep into the ground, causing environmental problems and posing threats to human health.