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IZN News 2025-03 Inzincmining.com

Corporate Updates

TSX.V: IZN

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IZN News 2025-03

Inzincmining.com

May 29, 2025 News Release 2025-03

InZinc Mobilizes to Drill Test for Extensions to Sedex Zn-Pb-Ag Discovery at Indy

Project, Central BC

Vancouver, BC – InZinc Mining Ltd. (TSX -V: IZN) (“InZinc” or the “Company”) is pleased to a nnounce crew

mobilization for diamond drilling at the Indy Sedex (zinc-lead-silver-barite) project (100% interest) located 90 km

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% (zinc and lead) and 16.2 g/t silver over 9.9 m , and drill testing of the new Hilo Anomaly located

east of B-9 (see Figure 1). Drilling will commence on or around June 1st.

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 1100 line

km of airborne geophysics, over 6000 soil samples and multiple years of detailed geology

along a 11 km corridor known as the Main Trend.

Sedex District in Central BC

The extensive tenure at Indy covers 200 square km and a 30 km length of under -explored strata in central B ritish

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 by-products.

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IZN News 2025-03

Inzincmining.com

Figure 1: B-9 Zone Expansion Potential

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 1,600,000 common shares of the Company for a period of five (5) years at an exercise price of

$0.05 per share effective May 28, 2025. These stock options will vest over the next 12 months.

About InZinc

InZinc is an active explorer at its Indy Sedex project (100%) in central British Columbia, Canada. The Company is

exploring near surface zinc-lead-silver and barite mineralization discovered at Indy in a new, under-explored mineral

region analogous to the prolific Selwyn Basin of northeastern BC and the Yukon. South32 Limited (ASX, LSE, JSE)

became a major tenure holder in the Indy belt by staking approximately 200 km2 of adjacent claims in late 2021.

Through its equity investment in American West Metals (ASX) and a 50% 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.

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IZN News 2025-03

Inzincmining.com

InZinc Mining Ltd.

Wayne Hubert

____________

Chief Executive Officer For further information contact :

Phone: 604.687.7211 Joyce Musial

Website: www.inzincmining.com Vice President, Corporate Affairs

Phone: 604.317.2728

Email: [email protected]

Reference

1. Emsbo, Poul, Seal, R.R., Breit, G.N., Diehl, S.F., and Shah, A.K., 2016, Sedimentary exhalative (sedex) zinc-lead-silver deposit model: U.S.

Geological Survey Scientific Investigations Report 2010–5070–N, 57 p., http://dx.doi.org/10.3133/ sir20105070N.

Qualified Person

Patrick McLaughlin, P.Geo., 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.

Cautionary Note Regarding Forward-Looking Statements

This news release contains forward -looking statements or forward -looking information within the meaning of applicable securities laws

(collectively, "forward-looking statements"). All statements herein, other than statements of historical fact, are forward -looking statements.

Forward-looking statements, include but are not limited to, statements that address activities, events of developments that the Company expects

or anticipates will or may occur in the future. Forward-looking statements are typically identified by words such as: believe, expect, anticipates,

intends, estimates, plans, postulate, indicate and similar expressions, or are those, which, by their nature, refer to future events. Although InZinc

believes that such statements are reasonable, it can give no assurance that such expectations will prove to be correct. The Company cautions

investors that any forward -looking statements are not guarantees of future results, performance or actions, and that actual results or actions

may differ materially from those in forward -looking statements as a result of various factors, including, but not limited to, those risks and

uncertainties disclosed in the Company’s Management’s Discussion and Analysis for the year ended December 31, 2024 and for the three

months ended March 31, 2025 filed with certain securities commissions in Canada and other information released by the Company and filed

with the appropriate regulatory agencies. Any forward-looking statement speaks only as of the date on which it is made and, except as may be

required by applicable securities laws, InZinc disclaims any intent or obligation to update any forward-looking statement, whether as a result of

new information, future events or results or otherwise. All of the Company’s Canadi an public disclosure filings may be accessed via

www.sedarplus.com.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Ven ture Exchange)

accepts responsibility for the adequacy or accuracy of this release.