Reduced operating complexity, including fewer unit operations and less process management associated with copper-cyanide ...

SAN JUAN, Argentina(Reuters) - Barrick Gold Corp failed to complete improvements to the Veladero mine in Argentina that could have prevented the third spill of cyanide solution in 18 months, leading ...

Since the breakage of a pipe carrying the cyanide solution used in the heap leaching process at Argentina's Veladero mine on March 28 - which led the Argentinean authorities to restrict Barrick Gold ...

Some 20 cubic meters of solution leaked into the Euphrates River last week. Activities of the company operating the gold mine has been temporarily halted. Several ecology groups held a demonstration ...

LEADVILLE, Colo.--(BUSINESS WIRE)--CJK Milling Company, LLC (CJK) is excited to announce the elimination of cyanide in our mill extraction process. “We listened to the concerns of the Leadville ...

DENVER ” Invoking a 1992 pollution disaster, attorneys for Summit County told the state Supreme Court Tuesday that counties have the right to ban a cyanide-based gold mining technique if they believe ...

Then, a cyanide solution is trickled over it. The gold dissolves in the cyanide solution. The solution is then captured and processed to extract precious metals. Cyanide, although a potent poison, ...

FAIRBANKS - About 45,000 gallons of cyanide water solution spilled onto a mine road at the Fort Knox gold mine late Thursday after a bulldozer struck a supply line, according to a Friday notice from ...

The Colorado Supreme Court Monday essentially overturned Summit County’s ban on cyanide “heap-leach” mining, ruling that the state has a “dominant interest” in ensuring orderly regulation of mining ...

DENVER ” The Colorado Supreme Court on Tuesday took on the question of whether a Summit County ban on cyanide-based gold mining is constitutional, probing the boundary between state and county ...

New test results support RZOLV as a potential breakthrough solution for complex gold-copper ores, with the potential to avoid ...