Summitville mine
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The Summitville mine was a gold mining site in the United States, located in Rio Grande County, Colorado 25 miles south of Del Norte. It is remembered for the environmental damage caused in the 1980s
Summitville mine site in 1980
Detail of a 114-pound boulder which has an estimated 316 troy ounces of native gold. Auriferous volcanic breccia from the Little Annie Mine, Summitville. On display at Denver Museum of Nature and Science .
Sodium cyanide
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Sodium cyanide is a compound with the formula NaCN and the structure Na+ −C≡N. It is a white, water-soluble solid. Cyanide has a high affinity for metals, which leads to the high toxicity of this salt
Summitville mine
…550 acres (2.2 km2). New techniques were used to extract gold from otherwise uneconomic ore. The mining involved the treatment of pyritic ore with a sodium cyanide solution to leach the gold out of the ore—heap leaching (see also cyanide process). The solution (leachate) was then removed from the ore and the…
Natriumcyanid; Cyannatrium; Na CN