Mr. Wayne Hubert reports

INZINC REPORTS ADDITIONAL RESULTS FROM DRILLING FURTHER EXPANDING SEDEX MINERALIZATION AT INDY PROJECT, CENTRAL BC

Inzinc Mining Ltd. has released results from the remaining three shallow drill holes (eight previously reported, total of 11 drilled in 1,089 metres), successfully extending the depth of the B-9 zone to 120 m below surface at its 100-per-cent-owned Indy sedex (zinc-lead-silver-barite) project. Drilling in 2025 has now increased the B-9 mineralized trend by over 40 per cent to 700 metres in length and has expanded near-surface, high-grade mineralization at the road-accessible discovery located 90 kilometres southeast of Prince George in central British Columbia, Canada.

Highlights of new results -- drill hole IB25-038 (Table 1)

• Depth extension -- The principle mineralized horizon was intersected (3.3 per cent Zn, 0.3 per cent Pb, 2.6 g/t Ag over 4.2 m from 121.4 m down hole) 40 metres down dip (depth) of 2018 massive sulphide discovery (IB18-009 previously released Nov. 13, 2018, averaging 8.0 per cent Zn, 2.0 per cent Pb and 16.2 g/t Ag over 9.9 m from 78.1 m down hole), indicating good continuity of mineralization to a depth (down dip) of 120 m -- remains open for expansion down dip.
• More than one horizon recognized -- A second, shallower mineralized horizon intersected (3.2 per cent Zn, 0.4 per cent Pb, 2.6 g/t Ag over 3.2 m from 86.6 m down hole) is also present in adjacent drill holes north and south within a wide mineralized envelope. The mineralized envelope is recognized by its distinctive radiolarian type replacement mineralization and remains open at depth and along trend.

Highlights of 2025 exploration drilling results previously released (see news releases: Aug. 18 and Aug. 21, 2025)

Trend extension by greater than 40 per cent to over 700 m -- open along strike and down dip

• All 2025 drill holes across the 700 m long B-9 trend, reported mineralization at the principle mineralized horizon with nine holes returning mineralization above grade/width (see Table 1) cut-off.
• All intersections defining B-9 mineralization, including drilling prior to 2025, are located within 120 m of surface.
• B-9 trend remains open for further exploration along trend and at depth.
• Drilling to date at Indy has tested just 10 per cent of the prospective 7.5-kilometre Main trend.

Near-surface massive sulphide areas expanded

• Additional shallow, high-grade massive sulphides discovered in northern area (IB25-029: 11.0 per cent Zn, 2.3 per cent Pb and 27.1 g/t Ag over 3.0 m from 61.0 m down hole) located 80 m north of hole IB18-003 (9.3 per cent Zn, 2.4 per cent Pb and 18.0 g/t Ag over 3.1 m from 25.0 m down hole) -- open for expansion to the north.
• Gallium present in zinc-rich massive sulphide sample.

Zone widens directly below surface

• Widest, intersection to date (IB25-032, averaging 3.3 per cent Zn, 0.7 per cent Pb and 7.4 g/t Ag over 19.1 m from 29.9 m down hole -- including 8.5 per cent Zn, 2.1 per cent Pb and 21.3 g/t Ag over 2.0 m from 31.0 m down hole and containing semi-massive sulphides.
• Intersection is located 30 m up dip (west) of 2018 massive sulphide discovery (IB18-009, previously released Nov. 13, 2018) averaging 8.0 per cent Zn, 2.0 per cent Pb, and 16.2 g/t Ag over 9.9 m from 78.1 m down hole.

Sedex district in central B.C.

The extensive tenure at Indy covers 200 square kilometres 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 mineralization (zinc-lead-silver and barite) discovered across the 7.5 km Main trend at Indy is typical of worldwide Sedex deposits and districts. These deposits often include significant silver and critical minerals as byproducts.

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 B.C. 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 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, an independent 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.

Quality assurance/quality control

HQ drill core was collected from the drill site and delivered to the Indy camp by Inzinc staff. The core was logged, sample intervals were outlined and photographic records were collected. Core samples were split using a diamond saw or manually chipped at the camp with one-half of the core submitted for assay and the remainder stored in wooden core boxes. The core was bagged in individually marked plastic sample bags and shipments were compiled in labelled rice bags. Core shipments were delivered by Inzinc contract geologists to Bandstra Transportation Systems Ltd. in Prince George, B.C., for furtherance to MSA Labs in Langley, B.C., Canada, for analysis. Samples were prepared by MSA and analyzed by ICP-AES multielement plus four-acid digestion and select AAS fire assay. In addition to the labs QA/QC procedures, Inzinc inserted blind standards, blanks or lab-directed duplicates by special instruction -- every 10th sample. The results from the QA/QC samples were within industry norms.

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