The Cripple Creek and Victor Gold Mine in Teller County sprays cyanide over piles of crushed ore and collects the liquid that runs off — a process called “heap leaching.” The division has ...

Cyanide leach tests for the fresh gold samples for the sample with less than 1% sulfur content have achieved 98.8% gold recovery and the second gold sample with approximately 3% sulfur content ...

Barrick Gold (TSX ... % reduction in cyanide use by adding the GlyCat technology to the processing plant. Gold recovery remains comparable to traditional cyanidation. Glycine leaching technology ...

Borealis has begun introducing fresh cyanide to a section of the leach pad which has previously not been leached, which should result in a higher gold percentage doré compared to the doré from ...

In 1998, voters in Montana banned cyanide heap-leaching, a process developed to leach gold from lower-grade ore. That same year Pegasus Gold filed for bankruptcy.

PRAGUE, June 30 (Reuters) - Cyanide maker ... Bruzek said. Gold miner Barrick Gold (ABX.TO), opens new tab signed up to test and implement glycine for leaching ores with Draslovka in March.

The Yukon government says "elevated" levels of cyanide have been found in a creek downstream from the Victoria Gold's Eagle gold mine, following a heap leach failure and landslide at the facility.