Lundin Reaches Commercial Production at Eagle Mine
Designed capacity of the Humboldt mill is 2,000 mt/d. Throughput at the mill averaged 1,536 mt/d during October and 1,865 mt/d from November 1-18. Nickel recovery during the November period averaged 85%, slightly more than the designed rate of 83%. Copper recovery averaged 95%, against a designed rate of 96%.
Eagle is a relatively shallow underground mine, with access via a ramp. The mine employs transverse bench-and-fill stoping, using both cemented and uncemented rockfill. Two ventilation shafts are in place, with the downcast shaft also equipped for emergency egress. Ore from the mine is stored in a covered coarse ore stockpile prior to transport to the Humboldt mill site.
Ore is trucked 105 km from the mine to the mill. The ore-haulage route passes through the city of Marquette. Ore shipments to the mill began in early July.
Lundinís production guidance for the Eagle mine over the first three full years of operation (2015-2017) remains unchanged and is expected to average approximately 23,000 mt/y of nickel and 20,000 mt/y of copper contained in separate concentrates, plus precious metals and cobalt byproduct credits.