# Mining News in Wyoming

Canonical page: https://atlas-staging.minestarters.com/news?regions=wyoming

Atlas summarizes and classifies mining-industry stories from third-party publishers. Follow each source link for the original reporting.

Results: 45
Returned: 10
Coverage: drill results, resource updates, and metallurgy; primary commodity matching; all time unless dates are supplied.
Region: Wyoming (wyoming)
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## Noble Plains Uranium Corporate Update: Foundation Built, Scale Next - Charting a Path to 20 Million Pounds

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/noble-plains-uranium-corporate-update-foundation-built-scale-next-charting-a-pat--274ff544-9395-4070-b2d8-9910d0b18e2d) · [Markdown](https://atlas-staging.minestarters.com/news/noble-plains-uranium-corporate-update-foundation-built-scale-next-charting-a-pat--274ff544-9395-4070-b2d8-9910d0b18e2d.md)
- Original announcement: 2026-10-21T12:00:00.000Z
- Atlas analysis published: 2026-10-21T12:22:46.865Z
- Atlas analysis updated: 2026-10-21T12:22:46.865Z
- Company: Noble Plains Uranium Corp. (NOBL.V)
- Original source: [orestocks](https://orestocks.com/company/NOBL.V/press-releases/8790468953145477)
- Atlas sentiment: 0.304
- Atlas tags: Maiden Resource, NI 43-101 Compliant, QP/CP Signed, Inferred Resource, Stale Data Re-release, Nearology Play, Resource Update, Step-Out Extension, No Economic Study

Noble Plains Uranium Corp. provided a corporate update outlining its strategy to grow its uranium resources in Wyoming to 20 million pounds U₃O₈. The company highlighted its maiden NI 43-101 compliant resource at the Duck Creek Project, totaling 5.32 million pounds Indicated and 1.04 million pounds Inferred, and successful confirmation drilling at Shirley Central. Noble Plains also noted its strategic partnership with Ur-Energy for Shirley Central and the advantageous location of Duck Creek relative to existing processing facilities.

## Noble Plains Uranium Corporate Update: Foundation Built, Scale Next - Charting a Path to 20 Million Pounds

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/noble-plains-uranium-corporate-update-foundation-built-scale-next-charting-a-pat--2e1e769e-7ce6-4666-bc8e-ff234b0c7d35) · [Markdown](https://atlas-staging.minestarters.com/news/noble-plains-uranium-corporate-update-foundation-built-scale-next-charting-a-pat--2e1e769e-7ce6-4666-bc8e-ff234b0c7d35.md)
- Original announcement: 2026-10-21T00:00:00.000Z
- Atlas analysis published: 2026-10-21T12:34:40.992Z
- Atlas analysis updated: 2026-10-21T12:34:40.992Z
- Company: Noble Plains Uranium Corp. (NOBL)
- Original source: [jmn](https://www.juniorminingnetwork.com/junior-miner-news/press-releases/1187-tsx-venture/nobl/213309-noble-plains-uranium-corporate-update-foundation-built-scale-next-charting-a-path-to-20-million-pounds.html)
- Atlas sentiment: 0.347
- Atlas tags: Maiden Resource, QA/QC Disclosed

Noble Plains Uranium provided a corporate update highlighting the delivery of a maiden NI 43-101 resource at the Duck Creek Project (5.32 Mlb Indicated, 1.04 Mlb Inferred) and successful uranium intersections in all seven confirmation holes at Shirley Central. The company is pursuing a 'hub-and-spoke' strategy in Wyoming, leveraging historical data conversion and strategic relationships with producers like Ur-Energy.

## Premier American Uranium Reports 10 ft of 0.064% eU?O? in Ongoing Drilling at Kaycee, Wyoming

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/premier-american-uranium-reports-10-ft-of-0-064-eu-o-in-ongoing-drilling-at-kayc--6174b482-7a78-47fe-9885-829d19ee9081) · [Markdown](https://atlas-staging.minestarters.com/news/premier-american-uranium-reports-10-ft-of-0-064-eu-o-in-ongoing-drilling-at-kayc--6174b482-7a78-47fe-9885-829d19ee9081.md)
- Original announcement: 2026-10-07T11:00:00.000Z
- Atlas analysis published: 2026-10-07T11:40:37.896Z
- Atlas analysis updated: 2026-10-07T11:40:37.896Z
- Company: Premier American Uranium Inc. (PUR.V)
- Original source: [orestocks](https://orestocks.com/company/PUR.V/press-releases/7909277445337597)
- Atlas sentiment: 0.358
- Atlas tags: QA/QC Disclosed, Step-Out Extension

Premier American Uranium has reported positive mid-season drilling results from its Kaycee Project in Wyoming, including a 10 ft intercept of 0.064% eU3O8 at the West Diane target. The company also secured 1,883 additional acres of mineral rights to expand its exploration footprint in the Powder River Basin.

## Premier American Uranium Reports 10 ft of 0.064% eU₃O₈ in Ongoing Drilling at Kaycee, Wyoming

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/premier-american-uranium-reports-10-ft-of-0-064-eu3o8-in-ongoing-drilling-at-kay--f26a655d-5063-4e18-b763-7c928f90f880) · [Markdown](https://atlas-staging.minestarters.com/news/premier-american-uranium-reports-10-ft-of-0-064-eu3o8-in-ongoing-drilling-at-kay--f26a655d-5063-4e18-b763-7c928f90f880.md)
- Original announcement: 2026-10-07T00:00:00.000Z
- Atlas analysis published: 2026-10-07T13:04:25.977Z
- Atlas analysis updated: 2026-10-07T13:04:25.977Z
- Company: Premier American Uranium Inc. (PUR)
- Original source: [prospectors_exchange](https://premierur.com/premier-american-uranium-reports-10-ft-of-0-064-eu%e2%82%83o%e2%82%88-in-ongoing-drilling-at-kaycee-wyoming/)
- Atlas sentiment: 0.072
- Atlas tags: QA/QC Disclosed, Compositing Transparent, Step-Out Extension, Infill Drilling

Premier American Uranium reported mid-season results from its 2026 exploration drilling program at the Kaycee Project in Wyoming, highlighting new uranium intercepts at the West Diane and Rustler target areas. Key results include 3.05 meters (10 ft) grading 0.064% eU₃O₈ in drillhole WD26-012 at West Diane, which represents the thickest mineralized interval reported to date this year. The company also expanded its mineral rights by 1,883 acres at Rustler, connecting claim blocks and bringing the total land package to 31,724 acres, with approximately two-thirds of the planned drilling now complete.

## U.S. Gold Corp. Establishes CK Gold Financing While Keeping M&A Door Open

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/u-s-gold-corp-establishes-ck-gold-financing-while-keeping-m-a-door-open--3b409a36-ff1d-4663-8251-77d776fbd373) · [Markdown](https://atlas-staging.minestarters.com/news/u-s-gold-corp-establishes-ck-gold-financing-while-keeping-m-a-door-open--3b409a36-ff1d-4663-8251-77d776fbd373.md)
- Original announcement: 2026-10-01T00:00:00.000Z
- Atlas analysis published: 2026-10-01T15:18:40.814Z
- Atlas analysis updated: 2026-10-01T15:18:40.814Z
- Company: U.S. Gold Corp. (USAU)
- Original source: [cruxinvestor](https://www.cruxinvestor.com/posts/u-s-gold-corp-establishes-ck-gold-financing-while-keeping-m-a-door-open)
- Atlas sentiment: 0.493
- Atlas tags: NI 43-101 Compliant, Inferred Resource

U.S. Gold Corp. is advancing its fully permitted CK Gold copper-gold project in Wyoming towards construction financing. A March 2026 feasibility study reports an after-tax NPV of $632 million and a 27% IRR based on $3,250/oz gold.

## American Rare Earths: Cowboy State Mine Study Strengthens Foundation for Domestic U.S. Rare Earth Supply

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/american-rare-earths-cowboy-state-mine-study-strengthens-foundation-for-domestic--606ded2a-d5b5-410d-8f6f-7113c8eaa133) · [Markdown](https://atlas-staging.minestarters.com/news/american-rare-earths-cowboy-state-mine-study-strengthens-foundation-for-domestic--606ded2a-d5b5-410d-8f6f-7113c8eaa133.md)
- Original announcement: 2026-09-30T04:13:26.000Z
- Atlas analysis published: 2026-09-30T14:20:43.822Z
- Atlas analysis updated: 2026-09-30T14:20:43.822Z
- Company: American Rare Earths (ARRNF)
- Original source: [jmn](https://www.juniorminingnetwork.com/junior-miner-news/press-releases/3206-otcmkts/arrnf/212075-cowboy-state-mine-study-strengthens-foundation-for-domestic-u-s-rare-earth-supply.html)
- Atlas sentiment: 0.748
- Atlas tags: Tonnage Growth, QP/CP Signed, JORC Compliant, NI 43-101 Compliant, Inferred Resource, Low Recovery, Pilot Scale Complete, Recovery Stagnant, Maiden Resource, Resource Update, PEA-Supporting, Mill Route

American Rare Earths has announced an updated Scoping Study for its Cowboy State Mine, projecting an after-tax NPV of approximately US$1.07 billion and a 26-year mine life, representing a significant increase in scale and value compared to the previous study. The updated plan includes a 50% increase in throughput to 4.5 Mtpa and a 36% increase in annual NdPr oxide production to 2,500 tonnes, based entirely on Indicated Mineral Resources. However, initial capital costs have risen to US$900 million, and reported metallurgical recoveries for rare earth oxides have decreased, particularly for heavy rare earths, which the company is addressing through ongoing optimization test work.

## Cowboy State Mine Study Strengthens Foundation for Domestic U.S. Rare Earth Supply

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/cowboy-state-mine-study-strengthens-foundation-for-domestic-u-s-rare-earth-suppl--854c1857-4081-4670-8a63-45d37d5fc3c4) · [Markdown](https://atlas-staging.minestarters.com/news/cowboy-state-mine-study-strengthens-foundation-for-domestic-u-s-rare-earth-suppl--854c1857-4081-4670-8a63-45d37d5fc3c4.md)
- Original announcement: 2026-09-30T00:00:00.000Z
- Atlas analysis published: 2026-09-30T14:34:49.982Z
- Atlas analysis updated: 2026-09-30T14:34:49.982Z
- Company: American Rare Earths Limited (ARR)
- Original source: [globenewswire](https://www.globenewswire.com/news-release/2026/09/30/3372074/0/en/cowboy-state-mine-study-strengthens-foundation-for-domestic-u-s-rare-earth-supply.html)
- Atlas sentiment: 0.239
- Atlas tags: Resource Update, Low Recovery, Mill Route, Single Domain Only

American Rare Earths has released an updated Scoping Study for the Cowboy State Mine in Wyoming, projecting a 4.5 Mtpa operation with a 26-year mine life. The study reports an after-tax NPV of US$1.07 billion at an 8% real discount rate, supported by increased NdPr oxide production of approximately 2,500 tonnes per annum.

## American Rare Earths Reports Strong Initial Assay Results from 2026 Feasibility Drilling at Halleck Creek

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1f8ce6f9-211d-4274-a67e-aa59e8b48cd4) · [Markdown](https://atlas-staging.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1f8ce6f9-211d-4274-a67e-aa59e8b48cd4.md)
- Original announcement: 2026-09-21T15:28:00.000Z
- Atlas analysis published: 2026-09-21T16:09:40.625Z
- Atlas analysis updated: 2026-09-21T16:09:40.625Z
- Company: American Rare Earths (ARR)
- Original source: [yahoo_press](https://finance.yahoo.com/markets/commodities/articles/american-rare-earths-reports-strong-152800416.html)
- Atlas sentiment: 0.649
- Atlas tags: QA/QC Disclosed

American Rare Earths has reported strong initial assay results from its 2026 Feasibility Study drilling at the Halleck Creek project. The results confirm broad, near-surface rare earth mineralization with a pooled average grade of 3,497 ppm TREO.

## American Rare Earths Reports Strong Initial Assay Results from 2026 Feasibility Drilling at Halleck Creek

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--0677d244-3ba7-4993-9b9b-66bb44a07aa1) · [Markdown](https://atlas-staging.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--0677d244-3ba7-4993-9b9b-66bb44a07aa1.md)
- Original announcement: 2026-09-21T00:00:00.000Z
- Atlas analysis published: 2026-09-21T16:35:32.642Z
- Atlas analysis updated: 2026-09-21T16:35:32.642Z
- Company: American Rare Earths (ARR)
- Original source: [globenewswire](https://www.globenewswire.com/news-release/2026/09/21/3365671/0/en/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility-drilling-at-halleck-creek.html)
- Atlas sentiment: 0.727
- Atlas tags: QA/QC Disclosed, Compositing Transparent, Apparent Width Only, Infill Drilling, Bonanza Intercept

American Rare Earths reported strong initial assay results from the first six HQ core holes of its 2026 Feasibility Study drilling program at the Halleck Creek Rare Earths Project in Wyoming. The results confirm broad, near-surface rare earth mineralization with a pooled average grade of 3,497 ppm TREO, with 93% of sampled intervals exceeding the 1,000 ppm TREO resource cut-off grade. These results support the existing geological model and will contribute to ongoing Feasibility Study work and future Mineral Resource classification.

## Myriad Uranium’s Copper Mountain Extends Beyond Historic Resource

- Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/myriad-uranium-s-copper-mountain-extends-beyond-historic-resource--ed196d93-a833-4452-9421-565f5742fdd0) · [Markdown](https://atlas-staging.minestarters.com/news/myriad-uranium-s-copper-mountain-extends-beyond-historic-resource--ed196d93-a833-4452-9421-565f5742fdd0.md)
- Original announcement: 2026-09-18T00:00:00.000Z
- Atlas analysis published: 2026-09-18T15:19:49.936Z
- Atlas analysis updated: 2026-09-18T15:19:49.936Z
- Company: Myriad Uranium Corp. (M)
- Original source: [cruxinvestor](https://www.cruxinvestor.com/posts/myriad-uraniums-copper-mountain-extends-beyond-historic-resource)
- Atlas sentiment: 0.413
- Atlas tags: QA/QC Disclosed, Step-Out Extension

Myriad Uranium's Phase I drilling at the Canning deposit yielded chemical assays 20-60% higher than historical gamma-probe grades. Phase II drilling is currently expanding the footprint at the Lucky Cliff and Gem prospects, targeting mineralization outside the historic resource area.

# Atlas tag definitions

- **Bonanza Intercept:** Exceptionally high-grade zone, well above the deposit-type norm.
- **True Width Disclosed:** Actual thickness perpendicular to structure is stated, not just downhole length.
- **Step-Out Extension:** Mineralization extended beyond the previously known limit.
- **QA/QC Disclosed:** Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
- **Compositing Transparent:** Cut-off grade and internal dilution rules are clearly stated for reported intervals.
- **Refractory Ore:** Complex mineralogy requiring oxidation or other special processing before recovery.
- **Apparent Width Only:** Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
- **Stale Data Re-release:** Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
- **No QA/QC Disclosure:** Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
- **Metal Equivalent Opaque:** Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used.
- **Cut-off Undisclosed:** Cut-off grade not disclosed — cannot assess comparability to prior estimates or peers.
- **Deleterious Elements Present:** Penalty elements (arsenic, antimony, etc.) or refractory concerns noted in the release.
- **Infill Drilling:** Confirmatory drilling to raise resource confidence, not new discovery.
- **Nearology Play:** Value premise rests on proximity to a known deposit rather than own results.
- **Measured Resource:** Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
- **Indicated Resource:** Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
- **Proven Reserve:** Measured Resource with demonstrated economic viability after applying modifying factors.
- **Probable Reserve:** Indicated Resource with demonstrated economic viability after applying modifying factors.
- **Category Upgrade:** Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.
- **Tonnage Growth:** Significant tonnage increase (≥15%) vs prior estimate with grade maintained or improved.
- **Grade Improvement:** Average resource grade improved vs prior estimate — better deposit economics.
- **Contained Metal Growth:** True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.
- **QP/CP Signed:** Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
- **Cut-off Disclosed:** Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
- **JORC Compliant:** Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
- **NI 43-101 Compliant:** Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
- **Inferred Resource:** Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
- **All Inferred:** 100% of resource is Inferred category — very early stage, no engineering confidence.
- **Grade Decline:** Average grade dropped >5% vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling.
- **Tonnage Decline:** Resource tonnage decreased vs prior estimate — pit optimization removed marginal material or geological model revised down.
- **Category Downgrade:** Resource confidence decreased — Measured downgraded to Indicated, or Indicated to Inferred. Unusual and concerning.
- **Contained Metal Decline:** Contained metal decreased vs prior despite tonnage growth — grade dilution exceeds volume gain.
- **Dilutive Growth:** Tonnage increased but contained metal flat or down — likely from lower cut-off grade, not geological expansion.
- **Cut-off Lowered:** Cut-off grade significantly reduced vs prior estimate — tonnage growth may be artificial inflation.
- **Cut-off Undisclosed:** Cut-off grade not disclosed — cannot assess comparability to prior estimates or peers.
- **Historical Estimate Only:** Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling.
- **Stale Estimate:** Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
- **No Contained Metal:** Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
- **No QP/CP Disclosure:** No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
- **Maiden Resource:** First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component.
- **Resource Update:** Revised estimate for an existing resource — compare to prior to assess progress.
- **PEA-Supporting:** Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
- **PFS-Supporting:** Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
- **DFS-Supporting:** Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
- **High Recovery:** Recovery at or above the exceptional band for the commodity and processing route.
- **Pilot Scale Complete:** Pilot or demonstration plant testing completed under continuous operation.
- **Free Milling:** Simple, clean ore amenable to standard processing without oxidation.
- **Multi-Domain Tested:** Variability across ore domains (oxide, transition, fresh) has been addressed.
- **Recovery Improving:** Recovery improved versus a like-for-like prior test program on the same domain and route.
- **Low Recovery:** Recovery below the weak band for the commodity and processing route.
- **Bench Scale Only:** Only preliminary bench tests completed — no locked-cycle or pilot work.
- **Refractory Ore:** Complex mineralogy requiring oxidation or other special processing before recovery.
- **Single Domain Only:** Testing limited to one composite or domain — representativeness not established.
- **Recovery Stagnant:** No improvement across multiple test programs on comparable material.
- **Theoretical Recovery Only:** Only theoretical or liberation-derived recovery reported, with no actual test result.
- **Heap Leach Route:** Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
- **Mill Route:** Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
- **Gravity Route:** Gravity separation forms a material part of the flowsheet.
- **POX/BIOX Route:** Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX.
- **Byproduct Commodity:** The tested commodity is a byproduct rather than the primary economic driver.