HighGold Mining Inc. announce an updated NI43-101 mineral resource estimate for the Johnson Tract Deposit at the Company's Johnson Tract polymetallic Gold Project located in coastal Southcentral Alaska, USA. The updated MRE is based on new diamond drilling completed by the Company in the second half of 2020 and 2021. Mineralization at the JT Deposit forms a roughly tabular silicified body that contains a stockwork of quartz-sulphide veins and breccia surrounded by a widespread zone of anhydrite alteration.

The JT Deposit is hosted by andesite to dacite volcaniclastic rocks. A robust geological model has been developed for the JT Deposit based on 120 drill holes, detailed surface mapping, a well archived and high-quality database, extensive re-logging and re-sampling of historic drill core, and drilling by HighGold since 2019. A total of 57 holes (26,364 meters) were completed in the JT Deposit environment by HighGold since the resource was reported in the second quarter of 2020, including 35 holes (15,128 meters) within the MRE.

The mineral resource block model is constrained by three dimensional (3D) geologic wireframes, constructed by Nathan Steeves, PhD, Chief Exploration Geologist, and reviewed by QP Ian Cunningham-Dunlop, P.Eng., Senior Vice President, Exploration. The domains are controlled primarily by geology to include significant mineralized, silicified, and veined rock. In general, domain extents are limited to material that can be correlated within geologically continuous, definable zones.

The majority of the mineral resource is contained within the JT Deposit High Grade (HG) domain. The JT Deposit HG domain is a steeply dipping, 25 to 70 meters thick, heavily veined and brecciated silicified zone extending 125 to 200 meters along strike and 250 meters vertically, with a moderate to steep plunge to the northeast, surrounded by the lower grade silicified or anhydrite-altered JT Deposit LG domain. A texturally and mineralogically distinct copper-rich zone underlies these two domains and is composed of the FWCZ HG and FWCZ LG domains.

A fifth domain, JT EXT, captures silicified and mineralized zones extending to the northeast along strike and down-plunge in a sparsely drilled portion of the JT Deposit. The southeastern margin of the JT Deposit is constrained by the steeply southeast-dipping Dacite Fault zone. Where not constrained by drilling or faulting, domains were extended approximately 25 meters from a drill hole, except where geology supports extension between holes in the trend of mineralization.