Yukon Geological Survey publication metadata (English, HTML)

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Publisher-reported update

2026-08-26

MERG (Mining Environment Research Group) and Viceroy's Brewery Creek Mine commissioned a study by Microbial Technologies Inc., to determine the viability of biological detoxification of spent heaps in Northern (Arctic) environments. This approach has been applied at a small number of mine sites in North America, but it remains a relatively unproven technology. In particular, the detoxifying ability of microorganisms indigenous to Northern mine sites remained to be demonstrated. This approach may be advantageous for the Yukon Territory because it relies on bacteria grown on site to destroy cyanide, as compared with importing (potentially large quantities) of hydrogen peroxide. The study was designed to answer two questions:: Is biological detoxification a feasible option for Brewery Creek Mine? Is this process likely to be applicable to other similar operations in the Yukon Territory and other Northern locations? There is virtually no information on the abundance and distribution of bacteria capable of degrading cyanide in the Arctic. It is known that different bacterial species degrade different metal-cyanide complexes, such as iron-cyanide or nickel-cyanide complexes. Thus, it…

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