Macassa gold mine

Macassa Underground Gold Mine is located in the Town of Kirkland Lake, 580 km north of Toronto, Ontario, Canada.

Macassa is one of the highest gold grade mines in the world. Macassa commenced operations in 2002, and with the discovery of the South Mine Complex (SMC), has been able to increase its level of production significantly over the past five years. The SMC has been driving grade improvement at Macassa, with results from ongoing exploration drilling continuing to extend the SMC mineralization and adding to the Mine’s Mineral Resources in support of growing production and extending mine life.

The mine is located in an area with well-developed infrastructure, including a provincial highway, a railway system and a private airport. High-grade ore is processed at the Macassa Mill, which currently has available capacity and is located in close proximity to the mine.

Mine Type‎:

Underground, shaft access.

Deposit Type:

Orogenic greenstone hosted gold (Lode Gold deposit).


100% – Kirkland Lake Gold.

Mining Method(s)‎:

Overhand and Underhand Cut-and-Fill and a small portion of Long Hole methods.

Processing Method(s):

Carbon in Pulp (CIP); Gold doré. 2,200 tpd capacity Macassa Mill (ore and waste).

Mine Life‎:



241 Au kozt in 2019

AISC (2019):

$695/oz Au

Reserves / Resources (12/31/2019):

2,453 kozt – P&P; 1,340 – MI&I

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