The depositional environment for the mineralization at Lalor and the 1901 deposit are similar to present and past producing base metal deposits in felsic to mafic volcanic and volcaniclastic rocks in the Snow Lake mining camp. The deposits appear to have an extensive associated regional hydrothermal alteration.

The mineralized envelopes are shallow dipping, with zinc mineralization defined to date beginning at approximately 600 m from surface and extending to a depth of approximately 1,100 m. The mineralization trends about N320° to N340° azimuth and dips between 30° and 45° to the north. It has a lateral extent of about 1,400 m in the north-south direction and 800 m in the east-west direction.

Sulphide mineralization is dominated by pyrite and sphalerite. In the near solid (semi-massive) to solid (massive) sulphide sections, pyrite occurs as fine to coarse grained crystals ranging one to six millimetres and averages two to three millimetres in size. Sphalerite occurs interstitial to the pyrite. A crude bedding or lamination is locally discernable between these two sulphide minerals. Near solid coarse-grained sphalerite zones occur locally as bands or boudins that strongly suggest that remobilization took place during metamorphism.

Disseminated blebs and stringers of pyrrhotite and chalcopyrite occur locally within the massive sulphides, adjacent to and generally in the footwall of the massive sulphides. The hydrothermally altered r ........

Lalor mine is a ramp and shaft accessible mine.

At Lalor, lateral development is horizontal or near horizontal tunnelling, travelable by rubber tired mechanized equipment. Ramps are typically mined at up to +/- 15% grade to provide access between levels. Rounds are 4m long and typical dimensions are 6m wide by 5m high. Standard ground support, consists of resin grouted rebar and welded wire mesh across the back and to within 1.8m of the sill on the walls and face. Mine services, including compressed air, process water and discharge water pipelines, paste backfill pipeline, power cables, leaky feeder communications antenna and ventilation duct, are installed in main levels and stope entrances.

At Lalor, main ventilation raises and ore pass raises are developed by a mining contractor using a raisebore and/or Alimak climber. Ground support and ladder ways are installed as required. Longhole slot raises, transfer ore passes, and auxiliary ventilation raises are limited to approximately 35m long and are developed using longhole conventional drop raise techniques. Drain, paste backfill and electrical cable holes are drilled using longhole or raisebore drills and are reamed to designed diameter.

There are two mining methods used at Lalor mine: variations of cut and fill and longhole open stoping (predominantly transverse longhole mining with minor longitudinal retreat).

Cut and Fill Mining
Single pass overhand mechanized cut and fill ........

The Stall mill, processes ore from the Lalor Mine, which began commercial operations in 2012. Initial capacity was 2,800 tonnes per day and through modifications and improvements, milling performance has increased to an average rate of 3,800 tonnes per day, although it has been demonstrated to reach peak throughput rates of up 4,500 tonnes per day.

From time to time, a portion of the ore mined from our Lalor mine is transported to the Flin Flon concentrator for processing.

New Britannia mill is currently being refurbished to process ores from the Lalor gold and copper-gold zones. The mill achieved first gold production on August 11, 2021.

The Stall mill consists of the following unit operations: crushing, grinding, talc flotation, copper flotation, zinc flotation, concentrate filtration and concentrate load-out.

Coarse ore from the mine is transported to a primary crushing plant located at the Chisel mine site and is operated by a third-party ........