The Meliadine gold project is located in the Archean Rankin Inlet Greenstone Belt, in the Churchill Structural Province of the northern Canadian Shield. This belt consists of mafic volcanic rocks, felsic pyroclastic rocks, sedimentary rocks and gabbro sills of about 2.7 billion years old that have been polydeformed and metamorphosed. The Meliadine trend is defined by northwest-trending rock units as well as a major fault zone known as the Pyke Fault: a high-strain zone characterized by multiple foliations and regionally important shear zones. The Meliadine gold district comprises a combination of orogenic greenstone- and banded iron formation (“BIF”) hosted gold mineralization. Gold in the district is associated with hydrothermally altered and sulphidized BIF (Lawley, et al., 2013). The Pyke Fault appears to control gold mineralization on the Meliadine property. The seven deposits currently known on the Meliadine property are located in the thrusted/folded volcano-sedimentary rock sequence located adjacent to the north of the Pyke Fault. The deposits consist of multiple lodes of mesothermal quartz-vein stockworks, laminated veins and sulphidized iron formation mineralization with strike lengths of up to three kilometres. The Upper Oxide iron formation hosts the Tiriganiaq and Wolf North zones. The two Lower Lean iron formations contain the F-Zone, Pump, Wolf Main and Wesmeg deposits. The Normeg zone was discovered in 2011 on the eastern end of the Wesmeg zone, near Tirigan ........

MiMining at Meliadine will be carried out through ten open pits and two underground mining operations. Underground access is by decline, with long-hole mining methods. Each stope is backfilled, with cemented pastefill and/or cemented rockfill used in primary stopes and dry rockfill for the secondary stopes. A conventional truck/shovel operation is used for the open pits. Mining in 2022 occurred by both underground and open pit at Tiriganiaq.

An underground portal allowing access to an exploration ramp was built at the Tiriganiaq deposit in 2007 and 2008 to extract a bulk sample for study purposes. This ramp now provides access for services, underground activities and personnel transportation. The construction of a second portal was completed in 2018. The main purpose of this second portal is for production activities, including bringing ore to the crusher feeding the mill.

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