Overview

Mine Type	Stockpile
Status	Closing / Closed
Commodities	Gold
Mining Method	Truck & Shovel / Loader
Production Start	...
Snapshot	The primary Mishi Mine pit was mined out in 2021. All identified economic ore material from Mishi Mine pit has been processed in 2023. Given that the Mishi open pit is currently not part of future production plans, Wesdome Gold Mines is no longer conducting any sampling, analysis or data verification activities at Mishi. Wesdome Gold Mines uses the Mishi pit as water storage as part of the water management process. That is why in 2024 it is planned to reduce excess water stored on site, particularly in Mishi Pit.

Deposit type

• Vein / narrow vein
• Mesothermal

Summary:

Both the Eagle River and Mishi deposits are mesothermal lode gold deposits hosted by Archean Greenstone Belts.

Mineralization is hosted in the Mishibishu Deformation Zone which traverses the property over a 14 km length and is interpreted as a major regional thrust fault which follows a volcanic-sedimentary contact. The northern portion of the property is underlain by mafic volcanic rocks and subvolcanic gabbroic sills. These are overlain to the south by shallow water immature arenaceous/arkosic sediments and polymictic conglomerates, followed by deeper water silts and turbidites progressing southward.

The sequence is overturned dipping moderately north, facing south and striking 90-120º. The deformation zone is 0.5 to 1.0 km wide and characterized by strong ankerite alteration and a schistose fabric dominated by phyllosilicate minerals, sericite and chlorite. Because of the intense deformation, systematic recognition of protoliths and subunits within the deformation zone is problematic.

In the Mishi Mine area, mineralization is hosted by a series of at least 8 tabular parallel zones consisting of ankerite-sericite ± chlorite alteration zones containing 2-8% fine disseminated pyrite and a system of sub conformable, dislocated, smoky grey quartz veinlets and lenses. Veins generally vary from 5-20% of the bulk volume of the zones with individual quartz lenses commonly 5-15 cm wide.

The 8 zones recognized to date are labelled from south (footwall) to north (hanging wall) M2, M4, M6, M8, M10, M12, M14 and M16. Zones M2 and M4 are close together and are merged when modelling into a Main Zone. The zones strike 100°, dip north 40° and plunge northeast. In general, the zones become more felsic, discrete and vein dominated towards the north.

Mining Methods

- subscription is required.

Comminution

Crushers and Mills

Processing

- subscription is required.

Production

Commodity	Units	2023	2022	2021	2020	2019	2018	2017	2016	2015
Gold	oz	....	....	....	....	3,072	4,310	7,985	7,485	9,457

Operational metrics

Metrics	2023	2022	2021	2020	2019	2018	2017	2016	2015
Tonnes milled	....	....	....	....	46,405 t	70,633 t	152,591 t	138,668 t	132,038 t
Stripping / waste ratio	....	....	....	....		4.2	2.7	2.7	5.1
Ore tonnes mined	....	....	....	....		90,304 t	170,234 t	194,753 t	125,167 t
Waste	....	....	....	....		382,171 t	462,824 t	533,753 t	643,396 t

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Jul 23, 2024

Employees	Year
......	2022
......	2021