Blackrock Silver Drills 5.03 Metres of 750 g/t AgEq and Experiences A number of Thick Mineralized Zones in First Assays from Japanese Enlargement Drill Program at Tonopah West

The Japanese Enlargement Drill Program Is Focusing on Potential Shallow Mineralization Encountered in Scout Drilling Throughout a 1.2 Kilometre Development

EASTERN EXPANSION PROGRAM HIGHLIGHTS:

• TXC25-166 minimize 5.03 metres grading 750 grams per tonne (g/t) silver equal (AgEq) (306.8 g/t silver (Ag) & 4.06 g/t gold (Au)) from 165.2 metres, together with 1.83 metres grading 1,661 g/t AgEq (724 g/t Ag & 8.58 g/t Au);

• TXC25-159 drilled 8.75 metres grading 193 g/t AgEq (90.3 g/t Ag & 0.94 g/t Au) from 234.1 metres, together with 0.82 metres grading 1,217 g/t AgEq (567.7 g/t Ag & 5.95 g/t Au);

• TXC25-164 intercepted 5.67 metres of 263 g/t AgEq (3.6 g/t Ag & 2.38 g/t Au) from 180.0 metres, together with 1.1 metres grading 955 g/t AgEq (9.2 g/t Ag & 8.67 g/t Au);

• TXC25-160 minimize 1.52 metres of 807 g/t AgEq (79.4 g/t Ag & 6.66 g/t Au) from 146.3 metres; and

• Assays for 13 drillholes below the Japanese Enlargement Drill Program stay pending right now.

Vancouver, British Columbia–(Newsfile Corp. – October 27, 2025) – Blackrock Silver Corp. (TSXV: BRC,OTC:BKRRF) (OTCQX: BKRRF) (FSE: AHZ0) (“Blackrock” or the “Firm“) proclaims partial assay outcomes from its fully-funded japanese enlargement drill program (the “Japanese Enlargement Program” or the “Program“) at its 100% owned Tonopah West venture positioned in Nye and Esmeralda Counties, Nevada, United States (“Tonopah West“).

The Japanese Enlargement Program was a follow-up to the Firm’s scout drill program (the “Scout Program“) at Tonopah West accomplished in February 2025 (see March 31, 2025 information launch), which confirmed important potential to develop the DPB South useful resource space 1,200 metres in an easterly course (the “Japanese Enlargement Zone“).

The Japanese Enlargement Program commenced in July 2025 throughout the Japanese Enlargement Zone, using reverse circulation (RC) drilling to determine preliminary holes, which have been then deepened utilizing diamond core drilling (core tails) for extra detailed geological evaluation. The Program drilled a complete of 6,798 metres (22,896 ft) in twenty-four drillholes, nonetheless, solely 22 drillholes have been accomplished, as two pre-collar holes weren’t usable for core tails. Of the 22 accomplished drillholes, three have been core holes accomplished from floor.

Andrew Pollard, Blackrock’s President and Chief Govt Officer, said: “Preliminary assays from our Japanese Enlargement Program have returned each high-grades and broad zones of shallow silver and gold intercepts probably extending as much as 1,200 metres alongside development from the DPB South Useful resource shell. On the historic Ohio mine space on the japanese margin of Tonopah West, gap TXC25-166 intersected 5.03 metres grading 750 g/t AgEq, offsetting the mineralized construction first recognized in RC gap TW25-128, which returned two 1.52 metres zones grading 1,198 g/t Ag and 9.61 g/t Au beginning at 292.6 metres and 219 g/t Ag and 1.72 g/t Au beginning at 297.2 metres earlier this 12 months. Thick zones of mineralization, spanning between 5.67 to eight.75 metres have been encountered in drillholes TXC25-164 and TXC25-159 simply east of the prevailing DPB South useful resource space, located in shut proximity to our deliberate exploration decline. As our geologic mannequin continues to advance alongside the outer ring of the fraction caldera, and with assays pending from an extra 13 drillholes below the Program, this rising zone represents important tonnage potential that may meaningfully develop the Tonopah West mineral useful resource base stemming from the sting of DPB South zone by way of to the japanese boundary of Tonopah West.”

Desk 1 summarizes the outcomes of the Japanese Enlargement Program utilizing a cut-off grade of 150 g/t AgEq.

Desk 1: Japanese Enlargement Program Important Outcomes

Thick intervals have been famous in TXC25-159, -164 and -166 which ranged between 5.03 to eight.75 metres. True thickness is estimated to be between 75% and 85% of the drilled interval. The thick mineralized intervals speaks to the potential of the Japanese Enlargement Zone.

TXC25-166 and TW25-128 (Scout Program) minimize thick, and high-grade intervals alongside the Pittsburg-Monarch fault system which is oriented north-northwest. This splay of the fault opens extra upside alongside the japanese margin of the property from TW25-128, which returned 1.52 metres grading 1,198 g/t Ag and 9.61 g/t Au (see March 31, 2025 information) in direction of TW20-001, which minimize 28.96 metres of 435.7 g/t Ag and 5.29 g/t Au, representing a horizontal distance of roughly 1,100 metres.

Drillholes TXC25-157, -161 and -163 have been mineralized with TXC25-161 returning 2.4 g/t Ag and 0.92 g/t Au over 1.98 metres, and TXC25-163 yielding 31.7 g/t Ag and 0.78 g/t Au over 0.95 metres. TXC25-157 encountered 0.46 metres grading 60.2 g/t Ag and 0.74 g/t Au. TXC25-156, -162, and -165 didn’t return important outcomes.

Assay outcomes for eleven Japanese Enlargement holes (TXC25-167 by way of -170 and TXC25-172 by way of -177 and TXC25-179 are pending right now. TXC25-171 and TXC25-178 have been accomplished within the DPB South useful resource space, and assays are pending for these two holes right now.

Determine 1: Drillhole location map for the Japanese Enlargement drillholes reported on this information launch

To view an enhanced model of this graphic, please go to:
https://photos.newsfilecorp.com/information/676/271960_e0ea6e7dc4eb3bef_001full.jpg

Determine 2: Tonopah West enlargement potential

To view an enhanced model of this graphic, please go to:
https://photos.newsfilecorp.com/information/676/271960_e0ea6e7dc4eb3bef_002full.jpg

High quality Assurance/ High quality Management

All sampling is carried out below the supervision of the Firm’s venture geologists, and a strict chain of custody from the venture to the pattern preparation facility is carried out and monitored. The RC samples are hauled from the venture website to a safe and fenced facility in Tonopah, Nevada, the place they’re loaded on to American Assay Laboratory’s (AAL) flat-bed truck and delivered to AAL’s facility in Sparks, Nevada. A pattern submittal sheet is delivered to AAL personnel who arrange and course of the pattern intervals pursuant to the Firm’s directions.

The RC samples are lined out on the lab and logged into AAL’s system. The samples are dried, crushed to 85% passing 10 mesh (2mm) and a 250-gram sub-sample cut up is collected and pulverized to 200 mesh (74 micron) in a hoop and puck pulverizer. Then the pulverized materials is digested and analyzed for gold utilizing fireplace assay fusion and an Induced Coupled Plasma (ICP) end on a 30-gram assay cut up (FA-PB30-ICP). Silver is set utilizing five-acid digestion and ICP evaluation (ICP-5AM48). Over limits for gold and silver are decided utilizing a gravimetric end (GRAVAU30 and GRAVAG30). Knowledge verification of the assay and analytical outcomes are accomplished to make sure correct and verifiable outcomes. Blackrock personnel insert a blind prep clean, lab clean or an authorized reference materials roughly each fifteenth to twentieth pattern.

Certified Individuals

Blackrock’s exploration actions at Tonopah West are carried out and supervised by Mr. William Howald, Govt Chairman of Blackrock. Mr. William Howald, AIPG Licensed Skilled Geologist #11041, is a Certified Individual as outlined below Nationwide Instrument 43-101 – Requirements of Disclosure for Mineral Initiatives. He has reviewed and authorised the contents of this information launch.

About Blackrock Silver Corp.

Backed by gold and silver ounces within the floor, Blackrock is a junior treasured metallic targeted exploration and improvement firm pushed so as to add shareholder worth. Anchored by a seasoned Board of Administrators, the Firm is targeted on its 100% managed Nevada portfolio of properties consisting of low-sulphidation, epithermal gold and silver mineralization positioned alongside the established Northern Nevada Rift in north-central Nevada and the Walker Lane development in western Nevada.

Extra data on Blackrock Silver Corp. could be discovered on its web site at www.blackrocksilver.com and by reviewing its profile on SEDAR at www.sedarplus.ca.

Cautionary Observe Concerning Ahead-Trying Statements and Data

This information launch accommodates “forward-looking statements” and “forward-looking data” (collectively, “forward-looking statements“) throughout the that means of Canadian and United States securities laws, together with the US Non-public Securities Litigation Reform Act of 1995. All statements, aside from statements of historic reality, are forward-looking statements. Ahead-looking statements on this information launch relate to, amongst different issues: the Firm’s strategic plans; the completion of the Firm’s Japanese Enlargement Program at Tonopah West and the anticipated aims and outcomes therefrom; materials enlargement of the Tonopah West mineral useful resource base; the Firm’s de-risking initiatives at Tonopah West; estimates of mineral useful resource portions and qualities; estimates of mineralization from drilling; geological data projected from sampling outcomes; and the potential portions and grades of the goal zones.

These forward-looking statements replicate the Firm’s present views with respect to future occasions and are essentially based mostly upon quite a lot of assumptions that, whereas thought-about affordable by the Firm, are inherently topic to important operational, enterprise, financial and regulatory uncertainties and contingencies. These assumptions embrace, amongst different issues: situations basically financial and monetary markets; accuracy of assay outcomes; geological interpretations from drilling outcomes, timing and quantity of capital expenditures; efficiency of accessible laboratory and different associated companies; future working prices; the historic foundation for present estimates of potential portions and grades of goal zones; the provision of expert labour and no labour associated disruptions at any of the Firm’s operations; no unplanned delays or interruptions in scheduled actions; all essential permits, licenses and regulatory approvals for operations are obtained in a well timed method; the flexibility to safe and preserve title and possession to properties and the floor rights essential for operations; and the Firm’s capability to adjust to environmental, well being and security legal guidelines. The foregoing listing of assumptions isn’t exhaustive.

The Firm cautions the reader that forward-looking statements contain identified and unknown dangers, uncertainties and different components that will trigger precise outcomes and developments to vary materially from these expressed or implied by such forward-looking statements contained on this information launch and the Firm has made assumptions and estimates based mostly on or associated to many of those components. Such components embrace, with out limitation: the timing and content material of labor applications; outcomes of exploration actions and improvement of mineral properties; the interpretation and uncertainties of drilling outcomes and different geological knowledge; receipt, upkeep and safety of permits and mineral property titles; environmental and different regulatory dangers; venture prices overruns or unanticipated prices and bills; availability of funds; failure to delineate potential portions and grades of the goal zones based mostly on historic knowledge; basic market and trade situations; and people components recognized below the caption “Dangers Components” within the Firm’s most up-to-date Annual Data Kind.

Ahead-looking statements are based mostly on the expectations and opinions of the Firm’s administration on the date the statements are made. The assumptions used within the preparation of such statements, though thought-about affordable on the time of preparation, could show to be imprecise and, as such, readers are cautioned to not place undue reliance on these forward-looking statements, which converse solely as of the date the statements have been made. The Firm undertakes no obligation to replace or revise any forward-looking statements included on this information launch if these beliefs, estimates and opinions or different circumstances ought to change, besides as in any other case required by relevant regulation.

Neither the TSX Enterprise Alternate nor its Regulation Providers Supplier (as that time period is outlined within the insurance policies of the TSX Enterprise Alternate) accepts accountability for the adequacy or accuracy of this launch.

For Additional Data, Contact:

To view the supply model of this press launch, please go to https://www.newsfilecorp.com/launch/271960