Critical Minerals Briefing | The Last Reserve Nobody Wanted — Until Now
Strategic Resources Quarterly  ·  Critical Minerals Briefing
NASDAQ: SKBL → KAZR
Special Investigation · Critical Minerals · April 2026

The Last Reserve
Nobody Wanted.
Until Now.

China just weaponized its monopoly on the metals that run the modern world. Tungsten is up 557% in 14 months. A rare-earth export pause expires November 10, 2026. A U.S.-backed NASDAQ company just secured the largest undeveloped tungsten deposit on Earth — in Kazakhstan.

China's rare-earth suspension expires Nov. 10, 2026 · Export controls already in force
+557%
Tungsten APT price
Jan 2025→Apr 2026
90%
China's share of global
REE processing
1.4M t
WO₃ JORC resource
Severniy Katpar
380k t
REO historical resource
Akbulak project
$1.6B
U.S. gov't financing
LOIs (EXIM + DFC)

In the space of eighteen months, Beijing turned a theoretical supply-chain risk into a live emergency. The minerals that run every EV motor, fighter jet, and wind turbine are now gated by Chinese export licensing. And the West has exactly one realistic answer on the timeline that matters. It runs through Kazakhstan.

In April 2025, the Chinese Ministry of Commerce imposed export controls on seven medium and heavy rare earth elements. Production lines at automakers in the U.S., Europe, Japan, and South Korea halted. European rare-earth prices spiked to six times Chinese domestic levels. On October 9, Beijing expanded the controls. Then came tungsten: February 2025 export restrictions, followed by December designations limiting tungsten exports to just 15 approved Chinese companies for all of 2026 and 2027. Chinese tungsten exports contracted 40% year-on-year.

A one-year diplomatic pause on the rare-earth escalation was agreed at the November 2025 U.S.–China summit. It expires November 10, 2026. The underlying controls remain active. The clock is running.

On April 30, 2026, a U.S.-backed mining company named Cove Kaz Capital merged with NASDAQ-listed Skyline Builders Group (SKBL) to form Kaz Resources Inc., set to trade as KAZR. The combined company controls a 75% stake in a 380,000-tonne rare earth oxide historical resource in northern Kazakhstan — and a 70% stake in the single largest undeveloped tungsten deposit on Earth. That is the story this briefing examines.

⬡ Section I

Why Rare Earths Now

The supply-chain story you've heard before finally has a timeline attached to it.

⬡ Global Supply Control · Who Holds The Choke Points
China's Grip on Critical Minerals Processing, 2025
Processing / Production Share
Rare Earth Separation & Refining
China
91% of global capacity
91%
Rest of World
9%
Tungsten Production
China
80% of global production
80%
Vietnam
6%
Russia
5%
Severniy Katpar*
?
*Severniy Katpar is undeveloped; production share shown is indicative of potential scale once operational. All other figures: GlobalData, IEA, 2025.

Rare earths are not actually rare in geological terms. What is rare is a deposit large enough to mine economically, in a stable enough jurisdiction to permit, with a processing partner capable enough to refine the ore. China spent three decades building those capabilities. The rest of the world outsourced them.

The chokepoint did not announce itself slowly. The April 2025 export controls on seven medium and heavy rare earths — samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium — hit manufacturing supply chains before most procurement officers had run contingency models. The October 2025 expansion added five more elements. More critically, it required foreign companies to obtain Chinese export licenses for any product containing Chinese-sourced rare earth materials, even if assembled outside China. Beijing's licensing apparatus now reaches into finished products manufactured on every continent.

"Modern industrial economies are structurally dependent on Chinese supply chains for minerals essential to defense, EVs, and renewable energy — with independent alternatives requiring twenty to thirty years to rebuild."

— Multi-institutional analysis on China's 2026 export controls

The November 2025 diplomatic suspension bought time, not security. The expiration date — November 10, 2026 — frames the investment thesis with a specific urgency that most supply-chain stories lack. Either Western governments establish credible alternative supply by that date, or they re-enter negotiations from the same position of vulnerability. The U.S. government knows this. That is why EXIM and DFC Letters of Interest totaling $1.6 billion flowed toward a single Kazakhstan project.

⬡ Section II

The Akbulak
Resource

380,000 tonnes of rare earth oxides. The three elements the modern economy actually needs. A U.S.-controlled stake. In Kazakhstan.

60 · 144.24
Nd
Neodymium
The structural element of NdFeB permanent magnets — the most powerful magnets known. Inside every EV motor, wind turbine, smartphone speaker, and guided-missile actuator on Earth.
59 · 140.91
Pr
Praseodymium
Paired with neodymium in NdPr — the highest-value REE pair on the market. Improves magnet performance at elevated temperatures, which is why every modern EV traction motor includes it.
39 · 88.91
Y
Yttrium
Used in lasers, superconductors, ceramic capacitors, cancer-therapy isotopes, and high-temperature alloys. Under Chinese export controls since April 2025. Supply outside China: structurally constrained.

The Akbulak Rare Earth Project sits in the Kostanay region of northern Kazakhstan. The joint venture — Akbulak REE Ltd. — is owned 75% by Cove Kaz Capital (now KAZR upon merger close) and 25% by Qazgeology JSC, the geological arm of Kazakhstan's national mining company. The exploration license has been transferred, meaning the JV holds operating control of the asset.

The 380,000-tonne figure is a historical resource: drawn from Soviet-era and Kazakh-era exploration work, not a JORC-compliant declaration. Converting it to a modern JORC resource requires additional drilling, sampling, and assay work — that process is part of the 2025–2026 work program already underway. The basket, however, is what matters: neodymium, praseodymium, and yttrium. Not the low-value heavy lanthanides that dominate many legacy deposits. The three elements the magnet supply chain actually runs on.

For context: MP Materials' Mountain Pass operation in California is the only producing rare-earth mine in the U.S. and trades at a multi-billion-dollar market capitalization with major government backing. Akbulak is earlier-stage and exploration-phase — but it carries the same magnet-element basket, a state JV partner already in place, and a resource base that could, on successful JORC conversion, rival the most significant non-Chinese deposits in the world. The investor calculus is between a known producer at a producer multiple and an exploration vehicle on the same supply-chain thesis.

⬡ Section III

Why Tungsten Makes
This a Now Story

Rare earths are the bigger thesis. Tungsten is where the price chart already moved — 557% in 14 months, with no substitute and no alternative supply.

+557% Total rise
Jan–Apr 2026
⬡ Ammonium Paratungstate (APT) · Rotterdam Spot · USD / Metric Ton Unit
From $920 to $3,000+ in 14 Months
Every inflection point marks a Chinese policy action
$0 $1k $2k $3k Feb '25 Export Controls Dec '25 15-Exporter Restriction $3,000+ Jan '25 Mar '25 Sep '25 Jan '26 Mar '26 Apr '26

APT = Ammonium Paratungstate, the benchmark tungsten commodity. Rotterdam spot pricing. February 2025 marks China's first tungsten export-control announcement. Each subsequent escalation produced a new leg higher. Sources: Fastmarkets, Argus, MarketScreener.

Tungsten does not have substitutes. It is irreplaceable in armor-piercing munitions, missile guidance systems, aerospace turbine blades, semiconductor manufacturing equipment, and cemented-carbide cutting tools. There is no viable alternative material for any of these applications. There is no recycling solution at scale. And there is no non-Chinese production at scale anywhere in the Western world today.

The United States has not commercially mined tungsten since 2015. The National Defense Stockpile holds fewer than 50 metric tons against annual U.S. consumption in the thousands of tonnes. The REEShore Act of 2022 prohibits Chinese-sourced tungsten in U.S. military equipment — a deadline that arrived in 2026 with no domestic alternative waiting. Defense-sector demand is growing at an estimated 8% annually. Analysts project tungsten overtaking automotive as the metal's largest end-use category by the mid-2030s.

KAZR's Severniy Katpar resource — 1.4 million tonnes of tungsten trioxide (WO₃), JORC-compliant, acquired in April 2026 — is the largest known undeveloped tungsten deposit on Earth. The Definitive Feasibility Study is set to commence in the second half of 2026. In a market where China just restricted exports to 15 approved companies total, owning the largest undeveloped non-Chinese tungsten asset is not an abstraction. It is a structural position.

⬡ Section IV

The Three
Pillars

Each stands on its own. Together they describe something unusual in public markets.

Pillar 01 · The Assets
The full critical-minerals stack. In one company.
Akbulak: 380,000t REO historical resource, 75% U.S.-controlled, NdPr-Y magnet basket. Severniy Katpar: 1.4M-tonne WO₃ JORC resource, 70% U.S.-controlled, the largest undeveloped tungsten deposit on Earth. Plus 15 additional concessions spanning lithium, tantalum, beryllium, niobium, cesium, and tin.
Pillar 02 · The Crisis
China weaponized the supply chain. The clock is ticking.
90% of global REE processing. 80% of tungsten production. Staged export controls from Feb 2025. APT up 557%. The rare-earth suspension expires Nov. 10, 2026. Multi-institutional analysis: 20–30 years for the West to rebuild independent supply chains from scratch.
Pillar 03 · The Backing
$1.6 billion in U.S. government financing signals pointed in one direction.
EXIM Bank LOI: up to $900M. DFC LOI: up to $700M. U.S.–Kazakhstan critical-minerals MOU: signed November 2025. Kaz Critical Minerals: the first U.S.-linked entity to receive critical-minerals concessions in Kazakhstan. Political capital and financial capital both aligned.
⬡ Section V

The
Vehicle

The transaction, the assets, the ownership structure, the financing path — laid out plainly.

KAZ RESOURCES INC. · NASDAQ KAZR (POST-MERGER)
Combined EntityKaz Resources Inc. — Q4 2026 / Q1 2027 expected close
ListingNASDAQ KAZR (currently SKBL)
REE AssetAkbulak — ~380,000t REO historical resource
REE OwnershipCove Kaz 75% · Qazgeology 25%
REE LocationKostanay region, northern Kazakhstan
REE BasketNeodymium · Praseodymium · Yttrium
Tungsten AssetSeverniy Katpar — ~1.4M tonnes WO₃ JORC
Tungsten OwnershipCove Kaz 70% · Tau-Ken Samruk 30%
Tungsten LocationKaraganda district, central Kazakhstan
Development StageDFS commencing H2 2026 (W); Exploration (REE)
Tungsten Capex~$1.1B total development estimate
EXIM Bank LOIUp to $900M (non-binding indication)
DFC LOIUp to $700M (non-binding indication)
Adjacent Portfolio15 critical-minerals licenses · Kaz Critical Minerals LLP
⬡ Investor Brief · KAZR At A Glance
If you read nothing else, read this.
  • Akbulak Rare Earth Project — 75% U.S.-controlled, 380,000-tonne historical REO resource, NdPr-Y basket, in JV with Kazakhstan's national geological company Qazgeology.
  • Severniy Katpar tungsten — 70% U.S.-controlled, ~1.4M tonnes WO₃ JORC resource. The single largest undeveloped tungsten deposit on Earth. Acquisition closed April 2026.
  • China processes 90% of global rare earths and produces 80% of global tungsten — and has weaponized both positions through staged export controls beginning early 2025.
  • Tungsten APT prices up 557% since China's first export controls; Rotterdam spot above $3,000 per metric ton unit as of April 2026. No substitute. No alternative non-Chinese supply at scale.
  • U.S. EXIM Bank LOI up to $900M and U.S. DFC LOI up to $700M — $1.6B in indicative U.S. government financing support against a $1.1B project capex estimate.
  • U.S.–Kazakhstan critical-minerals MOU signed November 2025. Kaz Critical Minerals is the first U.S.-linked entity to receive critical-minerals concessions in Kazakhstan.
  • Trump Jr. and Eric Trump-linked vehicle reportedly invested ~$20M for a 20% stake in SKBL, per Financial Times reporting via Mining.com.
  • 15 additional critical-minerals concessions spanning lithium, REEs, tantalum, beryllium, niobium, cesium, and tin across the Kazakh mining ecosystem.
NASDAQ: SKBL → KAZR · Investor Research
You've read the thesis. Review the official transaction documents and investor materials directly.
View Investor Profile →
⬡ Section VI

The Honest
Risks

No development-stage mining project is without risk. KAZR has more than its share. An investor who has not weighed these has not evaluated the opportunity.

⚠ Risk Disclosure · Read Before Proceeding

Six reasons this could still go wrong.

These are not dismissals. Each is real, documented, and would be flagged by any competent due-diligence process.

Merger Close Risk

The KAZR transaction is conditional on shareholder approval, regulatory clearances, and an effective SEC registration statement expected Q4 2026 / Q1 2027. Any could slip or fail.

Exploration Stage

Akbulak's 380,000t figure is a historical resource, not JORC-compliant. Substantial drilling, metallurgical testing, and feasibility work are required before large-scale financing can be secured.

Decade-Scale Timeline

Even on an aggressive schedule, assets of this size typically take 5–8 years from feasibility to commercial production. There is no near-term cash flow story here.

Commodity Correction Risk

If China relaxes controls — even temporarily — APT and REE prices could compress sharply. The same policy that drove the supercycle can reverse with a Beijing decision.

Country Risk

Kazakhstan is a stable mining jurisdiction by Central Asian standards but carries execution risk around local taxation, royalty terms, environmental permitting, and state-entity relations that lower-risk jurisdictions do not.

LOIs Are Not Commitments

EXIM and DFC Letters of Interest are non-binding signals. They have not signed financing agreements. If conditions change, those Letters can lapse. The capital still needs to be raised.

The defensible version of the KAZR thesis: rare earths and tungsten are in structural supply crunches driven by Chinese policy unlikely to fully reverse; KAZR controls the 380,000t REO historical resource and the single largest undeveloped non-Chinese tungsten asset on Earth; U.S. government financing channels are open; the equity is a multi-year option on those assets reaching production. Investors comfortable with development-stage mining risk and a multi-year horizon can rationally take a position in that framework. Investors who require near-term cash flow or low jurisdictional risk should not.

⬡ Section VII

The Timeline That
Matters

Every event that brought this story to today — and the catalysts still ahead.

February 4, 2025
China announces tungsten export controls
The first escalation. APT prices respond immediately, rising from ~$920 to over $1,650/mtu within weeks.
March 3, 2025
Akbulak REE Ltd. joint venture formed
Cove Kaz Capital (75%) and Qazgeology (25%) formalize the rare-earth JV in Kazakhstan's Kostanay region. Exploration license transferred to the JV.
April 4, 2025
China's rare-earth export controls begin
Seven medium and heavy REEs added to the export-control list. European prices for some rare-earth products reach six times Chinese domestic levels.
October 9, 2025
China expands rare-earth controls — five more elements
New rules require licenses for any product containing Chinese-origin rare earth materials, even if assembled outside China. The most aggressive move yet.
November 2025
U.S.–Kazakhstan critical-minerals MOU signed
Diplomatic framework agreement creating the pathway for U.S. government financing of Kazakh critical-mineral projects. Kaz Critical Minerals becomes the first U.S.-linked entity to receive concessions.
November 10, 2025
One-year REE suspension agreed
China agrees to temporarily suspend the October escalation. The earlier April controls remain active. The suspension expires exactly one year later.
December 2025
China restricts tungsten exports to 15 designated companies
For all of 2026 and 2027, only 15 Chinese companies are permitted to export tungsten. Global tungsten exports contract 40% year-on-year.
April 29, 2026
Severniy Katpar acquisition closes
Cove Kaz Capital completes the financial transaction for the 70% stake in Severniy Katpar LLP, securing the world's largest undeveloped tungsten deposit.
April 30, 2026
Merger announcement: Skyline Builders + Cove Kaz → Kaz Resources (KAZR)
EXIM and DFC LOIs totaling $1.6B disclosed. 15 critical-minerals concessions detailed. The full combined portfolio goes public for the first time.
November 10, 2026 ⚠
China's rare-earth suspension expires
The diplomatic pause on October 2025's escalation ends. If not renewed, the full rare-earth licensing apparatus reactivates. The window for establishing alternative supply is narrow.
⬡ Next Step · Investor Materials

The largest undeveloped tungsten deposit on Earth. A 380,000-tonne rare earth resource. On the NASDAQ.

Review the official transaction documents, SEC filings, JORC resource statements, and investor presentations directly from the company.

Sponsored content · Not investment advice · NASDAQ: SKBL → KAZR · April 2026
Important context: Issuer-sponsored content. Not personalized investment advice. The merger between Skyline Builders Group (SKBL) and Cove Kaz Capital is subject to shareholder approval, regulatory clearance, and the effectiveness of an SEC registration statement; the transaction is expected to close in Q4 2026 or Q1 2027 and is not assured. References to mineral resources include both JORC-compliant estimates (Severniy Katpar tungsten) and historical resources predating modern reporting standards (Akbulak rare earths). Resources are not the same as reserves. Tungsten and critical-minerals investments involve significant risk including potential loss of entire investment. Mining-stage equities are speculative. Review all SEC filings and consult a qualified financial advisor before making any investment decision.

Compensation Disclosure: [INSERT COMPENSATION DETAILS]. Prepared in exchange for monetary compensation. Publisher may hold or trade SKBL/KAZR shares at any time.
⬡ Sources & Methodology
Where the Numbers Came From

All statistics in this briefing are drawn from public filings, company press releases, government agencies, and recognized industry data providers as of late April 2026.

The KAZR Transaction

  • Skyline Builders + Cove Kaz merger, Severniy Katpar acquisition, $1.1B capex, EXIM $900M / DFC $700M LOIs, JORC 1.4M tonnes WO₃, 75% Akbulak stake, 15 concessions: Joint announcement, April 30, 2026 — businesswire.com
  • Cove Kaz 70% acquisition, Tau-Ken Samruk 30% partner, DFS H2 2026: April 29, 2026 — lasvegassun.com
  • Trump Jr. / Eric Trump-linked 20% stake, $20M investment: Mining.com / Financial Times — mining.com

Akbulak Rare Earth Project

  • Akbulak REE Ltd. JV, 75% Cove Kaz / 25% Qazgeology, 380,000t REO historical resource, Nd/Pr/Y basket: March 3, 2025 — globenewswire.com
  • Akbulak 2025 work program, Kostanay region operations: June 19, 2025 — globenewswire.com

China's Critical-Minerals Controls

  • China 91% of global REE separation; April 2025 controls on 7 elements; October 2025 expansion; six-fold European premium: iea.org
  • China 80% tungsten production, 90% REE processing; 20–30 year catch-up timeline: rareearthexchanges.com
  • 15 designated tungsten exporters, 40% YoY contraction, 20 Japanese entities targeted: discoveryalert.com.au

Tungsten Pricing & U.S. Position

Notes on methodology: The Akbulak 380,000-tonne REO figure is a historical resource predating JORC reporting standards; converting to JORC-compliant requires additional work. The Severniy Katpar 1.4M-tonne WO₃ figure is JORC-compliant. Resources are not reserves. The KAZR ticker is pending merger close subject to approvals. APT benchmarks reflect Rotterdam duty-free assessments. LOIs from U.S. agencies are non-binding indications, not financing commitments. Market data is point-in-time.

The Strategic Resources Quarterly  ·  NASDAQ: SKBL → KAZR  ·  Issuer-Sponsored Content  ·  April 2026