TONOPAH WEST PROJECT

Welcome to The
Silver State

Fraser Institute Annual Survey of Mining Companies 2025, Nevada has reclaimed the #1 spot as the most attractive mining jurisdiction in the world (Investment Attractiveness Index).

Tonopah West represents the largest patented claim package in the Tonopah Silver district, 100 patented and 279 unpatented claims covering 25.5 km2.

Tonopah Silver District: One of the largest historic silver districts in North America, producing 174 Mozs Ag & 1.8 Mozs Au from 7.5m tonnes

Mined from underground from 1900 to 1930, with peak years producing up to 14,000,000oz/ year AgEq; Victor vein was 24m thick where production ceased

A 2026 Updated Preliminary Economic Assessment (PEA)* outlines an average annual production profile of 7.1 million silver equivalent ounces per year at an all-in sustaining cost of USD$17.44 per AgEq ounce over an 11.2 year mine life.

The project currently hosts an indicated mineral resource estimate of 2.75 million tonnes at a block diluted grade of 216.8 grams per tonne (g/t) silver (Ag) and 2.25 g/t gold (Au) for a total of 19,167,000 ounces of silver and 199,000 ounces of gold. In addition, the project currently hosts an inferred mineral resource of 5.5 million tonnes at a block diluted grade of 188.5 g/t Ag and 2.62 g/t Au for a total of 33,560,000 ounces of silver and 467,000 ounces of gold.

2026 Updated PEA Tonopah West Project

#1 Mining Jurisdiction
in the World

Nevada has reclaimed the #1 spot as the most attractive mining jurisdiction in the world (Fraser Institute Annual Survey of Mining Companies 2025), combining exceptional geologic mineral potential with highly favorable government policies.

Tonopah West represents the largest patented claim package in the Tonopah Silver District, comprising 100 patented and 279 unpatented claims covering 25.5 km².

Known as the Queen of the Silver Camps, the Tonopah Silver District is one of the largest historic silver districts in North America, having produced 174 Moz Ag and 1.8 Moz Au from 7.5 million tonnes.

Mining ran from 1900 to 1930, with peak years reaching up to 14,000,000 oz/year AgEq — and the Victor vein was still 24m thick where production ceased.

Primary Silver Asset in America
Strategic and
Critical Mineral Status:

Essential to economic and national security of the United States

De-risking Towards Development
Jurisdiction – Grade – Margin - and Path to Production

Nevada – Private – Patented Land - Fast Tracked Permitting Advantages

Upside Case & Catalysts
Exceptional Leverage
to upside metal prices

Exploration & Resource Expansion Drilling Fast Tracked Permitting

BY THE NUMBERS

2026 Preliminary Economic Assessment (PEA)

$437M

AFTER-TAX NPV (5%)

Based on $31 Ag / $2,700 Au

28%

AFTER-TAX IRR

Strong project economics at base case pricing

$190M

INITIAL CAPEX

Estimated development capital

$17.44/oz AgEq

ALL-IN SUSTAINING COST (AISC)

Per ounce of silver equivalent

7.1M oz

AVERAGE ANNUAL PRODUCTION

Average silver equivalent production per year
(payable AgEq ounces)

11.2 years

MINE LIFE

Includes 271 g/t silver and 3.34 g/t gold

79.65M AgEq Payable Ounces

TOTAL PAYABLE SILVER PRODUCTION

of 36,407,000 and 496,000 ounces of gold through LOM

2026 Mineral
Resource Estimate

Certain scientific and technical information relating to the MRE and the PEA on the Tonopah West Project contained in this presentation is derived from the Company's press release titled "Blackrock Silver Announces Updated Preliminary Economic Assessment For Its Tonopah West Project In Nevada; +10 Year Mine Life Fortified By 90% Increase In Indicated Mineral Resources" dated March 31, 2026. Details of the PEA and MRE will be provided in a technical report prepared in accordance with NI 43-101 to be filed on SEDAR+ and the Company's website within 45 days of March 31, 2026.

All historic production information from Nevada Bureau of Mines & Geology, Bulletin 51 and Bulletin 92. US short tons have been converted to metric tonnes by multiplying short tons by 0.9072   AgEq = (historic gold production times historic gold price) divided by historic silver price) plus historic silver production . Production figures representative of entire district.

AREA AgEq CUTOFF G/T1 Tonnes Silver g/t Gold g/t AgEq g/t2 Ounces of Silver Ounces of Gold Ounces of Silver Equivalent 3 Classification4
Victor 140 882,000 255.2 2.65 525.5 7,241,000 75,000 14,899,000 Indicated
- 140 1,854,000 221.7 2.82 509.2 13,217,000 168,000 30,354,000 Inferred
DPB North 140 263,000 146.1 1.79 339.4 1,233,000 15,000 2,865,000 Indicated
- 140 1,686,000 193.9 2.68 482.9 10,514,000 145,000 26,180,000 Inferred
DPB South 140 1,281,000 213.3 2.12 442 8,787,000 87,000 18,209,000 Indicated
- 140 485,000 87.5 2.02 305.5 1,365,000 31,000 4,763,000 Inferred
NW Step Out 140 323,000 183.4 2.03 402.8 1,907,000 21,000 4,186,000 Indicated
- 140 622,000 146.7 1.67 327 2,933,000 33,000 4,763,000 Inferred
East Extension 140 - - - - - - - Indicated
- 140 891,000 193 3.1 527.3 5,531,000 89,000 15,109,000 Inferred
TOTAL - 2,750,000 216.8 2.25 454.3 19,167,000 199,000 40,159,000 Indicated
- - 5,538,000 188.5 2.62 465.8 33,560,000 467,000 82,944,000 Inferred

Certain scientific and technical information relating to the MRE and the PEA on the Tonopah West Project contained in this presentation is derived from the Company’s press release titled “Blackrock Silver Announces Updated Preliminary Economic Assessment For Its Tonopah West Project In Nevada; +10 Year Mine Life Fortified By 90% Increase In Indicated Mineral Resources” dated March 31, 2026. Details of the PEA and MRE will be provided in a technical report prepared in accordance with NI 43-101 to be filed on SEDAR+ and the Company’s website within 45 days of March 31, 2026.

1. AgEq cutoff grade is based on total mining, processing and G&A costs of $128.6/tonne and a silver price of $34/ounce.
2. For non-Victor areas a Silver Equivalent grade ratio used is 108:1 based on silver and gold prices of $35/ounce and $3,500/ounce, respectively, and recoveries for silver and gold of 88% and 95%, respectively. For the Victor area, Silver Equivalent grade ratio used is 102:1 based on silver and gold prices of $35/ounce and $3,500/ounce, respectively, and recoveries for silver and gold of 96% and 98%, respectively. AgEq Factor= (Ag Price / Au Price) x (Ag Rec / Au Rec); g AgEq/t = g Ag/t + (g Au/t / AgEq Factor).
3. Rounding as required by reporting guidelines may result in apparent discrepancies between tonnes, grade, and contained metal content.
4. Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the mineral resources estimated will be converted into mineral reserves. The quantity and grade of reported Inferred mineral resources in this estimation are uncertain in nature and there has been insufficient exploration to define these Inferred mineral resources as Indicated mineral resources. It is uncertain if further exploration will result in upgrading them to the Indicated mineral resources category.

TONOPAH WEST

Project Timeline

Updated PEA
Expansion Drilling
Engineering Designs
Baseline Data Collection
UG Permits
Water Pollution Control Permit
Permits & Mods
Decline Development
UG Drilling
Test Mining
Bulk Sample

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