Nexus Metals LLC — Vertically Integrated U.S. Antimony Opportunity

The Nexus Opportunity

Two assets that are 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, DLA stockpile contracts, FAST-41 designations
Perpetua Resources: ~$80M DPA + $2.7B EXIM application, FAST-41
U.S. Antimony Corp.: $245M DLA sole-source + $27M DPA III smelter expansion
The largest commitments have gone to companies with both upstream supply and downstream processing — Nexus aligns directly

Domestic platform

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

Faster technical pathway

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

Stronger positioning

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

Asset One — Upstream

White Spar Project open cut, Yavapai County, Arizona

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.

LocationYavapai County, AZ

StatusPast-producing

GeologyYavapai Supergroup

AccessVia AZ-89

Extent~1,200 ft strike

Historic grade30–45% Sb

Conceptual Exploration Target

Parameter	Low case	High case
Tonnage (short tons)	1,200,000	1,800,000
Grade (Sb %)	3%	4%
Contained Sb (tons)	~50,544	~67,932

Conceptual in nature. Insufficient exploration to define a mineral resource; further exploration may not result in a resource estimate.

Asset Two — Downstream

del Sol processing facility interior, Amargosa Valley, Nevada

del Sol Facility, Nevada

A turnkey, NDEP-permitted ore processing facility in Amargosa Valley. The 35.37-acre site holds Permit NEV2010101, current through May 2029, with multi-discipline analytical and processing capability and clear title.

LocationAmargosa Valley, NV

StatusOperating

CapacityUp to 18,500 tpa

PermitNEV2010101

Land35.37 acres

Water4.02 ac-ft/yr

Power3-phase (VEA)

Connectivity500 Mbps fibre

Antimony Product Suite

Antimony product suite.

Regulus II Antimony MetalSb 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.

Antimony TrisulphideSb₂S₃

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.

Sodium AntimonateNaSbO₃

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.

A domestic antimony platform, mine to metal.