American Yellowknife Mines Limited explored the site with detailed Geiger surveys and extensive trenching in the early 1950s.

In 1954 exploration work included over 10,000 feet (3,000 m) of surface diamond drilling, and the company was reorganized as Rayrock Mines Limited.

Underground development began in 1955 with the driving of a long adit tunnel to intersect the radioactive zones 300 feet (91 m) below surface.

Environmental cleanup began in 1996, with the objective being to contain contaminants at the site and limit exposure to persons who visit the area.

The territorial government has agreed to long-term monitoring of the site in order to ensure radiation levels and contamination does not threaten the area.