Oversight board continues to push for permanent arsenic solution – Cabin Radio
July 10, 2025
The oversight board for the cleanup of Giant Mine says it remains convinced arsenic trioxide dust at the site can be safely extracted and stored.
Approximately 237,000 tonnes of the highly toxic dust, which was produced by the historic roasting of gold ore, is stored in underground chambers at the former mine site on the edge of Yellowknife.
While work is currently underway to ensure the dust stays secured underground, the Giant Mine Oversight Board – an independent body that monitors remediation of the former gold mine – is researching several potential options for permanent solutions.
