Mr. Wayne Hubert reports

INZINC MOBILIZES TO DRILL TEST FOR EXTENSIONS TO SEDEX ZN-PB-AG DISCOVERY AT INDY PROJECT, CENTRAL BC

Inzinc Mining Ltd. has moved its crew for diamond drilling at the Indy Sedex (zinc-lead-silver-barite) project (100-per-cent interest) located 90 kilometres southeast of Prince George in central British Columbia, Canada. The 2025 drill program, including 12 to 15 drill holes, will focus on expansion of near-surface mineralization at the B-9 zone where previous drilling included an intercept of 10.0 per cent (zinc and lead) and 16.2 grams per tonne silver over 9.9 metres, and drill testing of the new Hilo anomaly located east of B-9. Drilling will commence on or around June 1.

Focus on expansion of B-9 zone -- mineralization remains open in all directions

• B-9 zone -- Near-surface mineralization (zinc-lead-silver) at B-9 zone has been intersected in 13 of 15 drill holes over a 450 m strike-length to a depth of 130 m and remains open for expansion in all directions.
• Hilo anomaly -- New Hilo anomaly, 450 m strike with strong zinc, lead and barium in soil, located 400 m east of the B-9 zone, supports the potential eastward extension of B-9 mineralization.
• Anomaly B -- Only 450 m of the 2.4 km long soil Anomaly B (zinc, lead, silver, barium) has been drill tested and is host to B-9 zone mineralization.
• Airborne EM geophysics - Airborne EM geophysical surveys identify a strong conductive response over 1.4 km coinciding with the upper or eastern edge of the soil Anomaly B and with B-9 zone mineralization.
• Unexplored targets - Additional large and unexplored targets are defined from 1,100 line km of airborne geophysics, over 6,000 soil samples and multiple years of detailed geology along a 11 km corridor known as the Main trend.

Sedex district in central B.C.

The extensive tenure at Indy covers 200 square km and a 30 km length of underexplored strata in central British Columbia. The Indy project is well located with respect to road, rail, power, port and smelter infrastructure.

The near-surface zinc-lead-silver and barite mineralization discovered at Indy is typical of worldwide Sedex deposits and districts (USGS, 20161). These deposits often include significant silver and critical minerals as byproducts.

Annual grant of stock options

Inzinc announces the annual grant of incentive stock options to certain directors, officers and consultants to purchase a total of 1.6 million common shares of the company for a period of five years at an exercise price of five years per share effective May 28, 2025. These stock options will vest over the next 12 months.

About Inzinc Mining Ltd.

Inzinc is an active explorer at its Indy Sedex project (100 per cent) in central British Columbia, Canada. The company is exploring near-surface zinc-lead-silver and barite mineralization discovered at Indy in a new, underexplored mineral region analogous to the prolific Selwyn basin of northeastern British Columbia and the Yukon. South32 Ltd. became a major tenure holder in the Indy belt by staking approximately 200 square km of adjacent claims in late 2021. Through its equity investment in American West Metals (ASX) and a 50-per-cent royalty interest (NSR) from any future production of indium mined at American West's West Desert project, Inzinc is also exposed to a portfolio of North American base metals and precious metals projects.

Qualified person

Patrick McLaughlin, PGeo, a qualified person as defined in National Instrument 43-101 -- Standards of Disclosure for Mineral Projects and a registered professional geoscientist in British Columbia, has approved the technical content of this news release.

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