Located in and around the City of Timmins, the Porcupine district has produced more than 67 million ounces since 1910. Currently, approximately 60% of the gold comes from the Hoyle Pond underground mine, where mechanized cut and fill and longhole mining methods are used to extract the ore, and the remaining ore comes from the Hollinger Open Pit mine. The Dome Underground mine ceased operations in 2017.
Ore is processed at the Dome processing facility using a circuit that includes crushing, grinding, gravity concentration, cyanide leaching, carbon in pulp recovery, stripping, electrowinning and refining.
Health & Safety
In 2016, Porcupine became the second site in the world to have a Draeger 9000 mine rescue vehicle onsite. The truck allows mine rescue teams to respond faster to an incident and stay there longer. It also monitors the air inside and out of the vehicle, and has thermal imaging that can help detect trapped miners.