Sentence examples for to extract gold from inspiring English sources
That was in 1994, when Friedland was best known by critics as "Toxic Bob," after another of his ventures, Galactic Resources, tried to develop a gold mine near Summitville, Colorado using heap leaching, an extraction process that dips ore in cyanide to extract gold.
Miners at the Colorado site used chemicals to extract gold.
Cyanide has been used to extract gold from crushed rock for more than 100 years.
Often the workers use hazardous materials like acid and mercury to extract gold from discarded electronics.
Rebel groups and foreign forces have annexed large swaths of the country to extract gold, diamonds, tin and timber.
In the 1990s, a company proposed building a mine that uses cyanide to extract gold near Lincoln, Mont.
Miners working on their own often use mercury to help extract gold and then boil it off, leaving behind dangerous contamination.
To 20 mL of the prepared extract, gold (III) chloride was added to make an overall concentration of 1 mM.
Similar processes extract gold, platinum and other materials from the sludge.
In Kalimantan, Indonesia, local people extract gold using mercury, which is a poisonous, potent neurotoxin.
A 4g ring comes from half a ton of rock, since artisanal miners extract gold from ore-rich seams, whereas large-scale mines extract 18-20 tofs of rock for the same size of ring.
