Nexus Metals LLC — A vertically integrated U.S. antimony platform

The Nexus opportunity

Two assets, stronger together than apart.

A historic high-grade antimony mine and an operating, permitted processing facility — combined into a single U.S. critical-minerals story.

The opportunity

Historic Arizona antimony mine with documented underground workings and high-grade stibnite veins
Operating, NDEP-permitted processing facility in Nevada with labs, buildings, water, power and accommodation
A combined U.S. critical minerals story materially stronger than either asset alone
Upstream antimony exposure with potential domestic processing optionality

Current positioning

White Spar at early-stage exploration with a defined conceptual target — significant upside toward a compliant resource
del Sol is a multi-discipline facility; antimony-specific flowsheet readiness to be confirmed via metallurgical work
Integration is a strategic opportunity requiring economic, metallurgical, logistics and permitting validation

Why antimony, why now

A supply crisis, and a policy tailwind.

The supply problem

USGS-designated Critical Mineral spanning defence, energy storage, flame retardants and semiconductors
China controls ~80% of global primary production and banned antimony exports to the U.S. in late 2024
No meaningful U.S. domestic primary production — almost entirely import-dependent
Price volatility and supply uncertainty accelerating government and industry interest in domestic alternatives

Government support & positioning

$300M+ federal funding committed to domestic antimony since Sep 2025 — DPA Title III grants, DLA stockpile contracts, FAST-41 permitting designations
Perpetua Resources: ~$80M DPA funding, $2.7B EXIM approval, FAST-41 — construction commenced Oct 2025. Americas Gold & Silver: largest current U.S. antimony mine; 51/49 JV with USAC for processing plant
U.S. Antimony Corp.: $245M DLA sole-source contract + $27M DPA III smelter expansion. Resolution Minerals’ Antimony Ridge received FAST-41 designation Apr 2026 — a past-producing, exploration-stage stibnite project directly analogous to White Spar
The government’s largest commitments have gone to companies with both upstream supply and downstream processing — Nexus’s combined platform aligns directly with this model

Platform

Domestic mine-to-metal exposure

Combines U.S. antimony mineral exposure with U.S. processing infrastructure in a single integrated vehicle.

Pathway

Faster technical route

A natural pathway for metallurgical evaluation and development studies — mine to facility in one jurisdiction.

Position

Stronger to counterparties

The combined platform is more compelling to government counterparties and strategic partners than either standalone asset.

US antimony landscape

Company	Primary asset	Stage	Gov. support	Mkt cap*
Perpetua Resources	Stibnite Gold Project, ID	Studies / early works	~$80M DPA + $2.7B EXIM; FAST-41	~US$3.8B
U.S. Antimony Corp.	Thompson Falls smelter + claims	Operating smelter; expanding	$245M DLA; $27M DPA	~US$1.3B
Americas Gold & Silver	Galena Complex, ID	Operating mine; Sb by-product	51/49 JV with USAC	~US$1.85B
Sunshine Silver Mining & Refining	Sunshine Mine + refinery, ID	Permitted; restart targeted 2028	Positioned under critical-minerals EOs	~US$2.2B
Nexus Metals	White Spar + del Sol	Brownfield exploration + permitted facility	Positioning within U.S. policy framework	Private

*Market data approximate as of April 2026 and shown for context only. Nexus exploration target is conceptual in nature. Peer data from public filings and announcements; comparisons do not imply equivalence in stage, scale, assets or value.

Asset one — upstream

White Spar antimony project, Arizona — White Spar Project · Yavapai County, AZ

White Spar Project, Arizona

A past-producing antimony prospect comprising four steeply dipping stibnite-bearing quartz veins within the Yavapai Supergroup. Historic workings, high-grade hand-cobbed ore and limited modern exploration support a clear, low-cost pathway to advancement.

Location	Yavapai County, AZ
Status	Past-producing
Geology	Yavapai Supergroup
Access	Via AZ-89
Extent	~1,200 ft strike · ≥1,000 ft down dip
Historic grade	30–45% Sb (hand-cobbed ore)

Conceptual exploration target

Scenario	Tonnage (short tons)	Grade (Sb %)	Contained Sb (tons)
Lower estimate	1,684,800	3%	50,544
Upper estimate	1,684,800	4%	67,392

Conceptual in nature. Insufficient exploration to define a mineral resource; further exploration may not result in a resource estimate. Historic production and grade figures are drawn from historical records and are unverified to current standards. Geophysical (EM) data is used as exploration support only.

Geology & mineralisation

Proterozoic metavolcanic and metasedimentary host rocks (Yavapai Supergroup); mineralisation controlled by high-angle NE-trending shear zones
High-grade stibnite (Sb₂S₃) in massive to banded quartz veins — an orogenic Sb-Au system driven by CO₂-rich metamorphic fluids
Geophysics: high-conductivity anomalies interpreted as antimony-bearing sulfide zones beneath and along strike from historic workings, extending from near surface to ~250–280 m depth
Conductive corridors indicate possible feeder structures and alteration pathways — a strong technical basis for drill targeting. Deposit analogues: Wildcat (AZ), Gold Hill (AZ), Yellow Pine (ID), Xikuangshan (China)

Near-term advancement plan

Phase 1 — Surface evaluation. Data room assembly, geological mapping and surface sampling to refine drill targets; UAV photogrammetry and 3D model of historic workings
Phase 2 — Drill validation. Diamond core holes (HQ, up to 100 m) targeting vein continuity, grade and down-dip extensions; full assay suite (ICP-MS, fire assay) with QA/QC programme
Four narrow, steeply dipping veins — geometry well suited to selective underground mining
A low-cost pathway toward technical de-risking and potential resource definition

Asset two — downstream

del Sol processing facility, Nevada — del Sol Facility · Amargosa Valley, NV

del Sol Facility, Nevada

A turnkey, NDEP-permitted ore processing facility in Amargosa Valley. The 35.37-acre site holds Permit NEV2010101 (Rev. 04, 2024), current through May 2029, with a 12,000 sq. ft. processing building, labs, three-phase power, dedicated water and on-site accommodation for 11 personnel. Multi-discipline analytical and processing capability — fire assay, ICP, XRF, cyanide toll processing and flotation bench testing — with clear title, no liens or encumbrances, and no issues noted at the latest NDEP inspection.

Location	Amargosa Valley, Nye County, NV
Status	Operating
Capacity	Up to 18,500 tpa
Permit	NEV2010101 (Rev. 04, 2024)
Land	35.37 acres · four parcels
Water	Dedicated well · 4.02 ac-ft/yr
Power	3-phase (VEA)
Connectivity	500 Mbps fibre

Expansion potential

~35-acre footprint. Fully permitted brownfield site with substantial undeveloped land — headroom to expand antimony throughput and add processing trains without greenfield permitting
Low-cost, green power. Nevada’s fast-growing solar and renewable capacity provides a cheap, low-carbon energy base for energy-intensive electrometallurgical processing
Tungsten & APT. Investigate a tungsten flowsheet to produce ammonium paratungstate (APT), the key traded tungsten intermediate and a USGS critical mineral

Adjacent opportunities

Sulphuric acid. Sulphur reporting from stibnite processing could be recovered as a sulphuric acid precursor — a reagent facing well-flagged structural global supply shortages
Rare earths & adjacent feed. Bolt on rare earths and other critical minerals, sourcing polymetallic feed from deposits within trucking distance where geology, logistics and economics align
Infrastructure leverage. Existing autoclave, caustic leach, filter presses and lab suite offer a natural front-end for APT and multi-mineral circuits, limiting incremental capex

Antimony product suite

From metal to specialty chemical.

A processing chain that moves up the value curve — each stage feeding the next, from base metal to higher-margin specialty product.

Stage 01 · Metal

Regulus II Antimony Metal Sb ingots

Immediate revenue + downstream feedstock

Primary intermediate for ammunition, lead-acid batteries, alloys, bearings, solders, semiconductors and flame retardants. DoD stockpile purchases are lifting demand for domestically produced metal.

Stage 02 · Defence

Antimony Trisulphide

Direct defence & ammunition exposure

Highest-value product; critical to primers, tracer rounds, pyrotechnics and munitions. Identified by the U.S. Army / DoD as strategic to rebuilding domestic ammunition supply chains.

Sb₂S₃

Stage 03 · Specialty

Sodium Antimonate

Higher-margin specialty chemicals

Flame-retardant synergist, glass fining agent and catalyst across plastics, electronics, data centres and advanced materials. Smaller market, higher margins, specialty customer access.

NaSbO₃

Materials

Presentation

The full June 2026 deck covering geology, processing capability, expansion potential and peer positioning.

Download presentation (PDF)

Important notice. The presentation has been prepared by Nexus Metals LLC (the “Company”) for information purposes only. It does not constitute, and must not be construed as, an offer to sell or a solicitation of an offer to buy any securities or interests in the Company, nor any inducement to enter into investment activity, in any jurisdiction, and must not form the basis of any contract or investment decision. Any offer or sale of interests in the Company will be made only to eligible investors pursuant to definitive offering documents and in compliance with applicable securities laws — in the U.S., accredited investors (Rule 501, Regulation D) and/or non-U.S. persons (Regulation S); in Australia, wholesale, sophisticated or professional investors to whom disclosure is not required under the Corporations Act 2001 (Cth). The presentation contains forward-looking statements based on assumptions current as at its date and subject to risks and uncertainties, many beyond the Company’s control; actual outcomes may differ materially. No representation or warranty, express or implied, is given as to its accuracy or completeness, and it is not a technical report, feasibility study, valuation or investment, legal or tax advice. By downloading the presentation you acknowledge and accept these terms.