Fifty years of roasting the arsenic-bearing gold ore at Giant Mine, near Yellowknife, produced 237,000 tonnes of arsenic trioxide dust that was stored underground. The federal government assumed responsibility for the site when the operator went into receivership. SRK has acted as senior technical advisor for the project since 2000, developing plans for long term management of the arsenic dust and for closure of the rest of the site. Ground freezing will be used to isolate the arsenic dust and a full-scale test of the plan was recently completed under SRK’s direction.
