# Mining News in Wyoming

Canonical page: https://atlas-extractions.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: 33
Returned: 10
Coverage: drill results, resource updates, and metallurgy; primary commodity matching; all time unless dates are supplied.
Region: Wyoming (wyoming)
Applied filters: {"regions":["wyoming"],"document_types":["drill_results","resource_update","metallurgy"],"document_type_match":"any"}
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## American Rare Earths Reports Strong Initial Assay Results from 2026 Feasibility Drilling at Halleck Creek

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23) · [Markdown](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23.md)
- Original announcement: 2026-09-21T00:00:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- 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: 0.686
- Atlas tags: QA/QC Disclosed, Apparent Width Only, Compositing Transparent, Infill Drilling

American Rare Earths reports 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 of 3,497 ppm TREO, and 93% of intervals exceeding the 1,000 ppm TREO resource cut-off. This drilling aims to increase geological confidence and support future resource classification and mine planning for the Cowboy State Mine.

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

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/myriad-uranium-s-copper-mountain-extends-beyond-historic-resource--39ceacf8-e456-4eb2-931a-1bf438ab38fb) · [Markdown](https://atlas-extractions.minestarters.com/news/myriad-uranium-s-copper-mountain-extends-beyond-historic-resource--39ceacf8-e456-4eb2-931a-1bf438ab38fb.md)
- Original announcement: 2026-09-18T00:00:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Myriad Uranium Corp. (M)
- Original source: [cruxinvestor](https://www.cruxinvestor.com/posts/myriad-uraniums-copper-mountain-extends-beyond-historic-resource)
- Atlas sentiment: 0.503
- Atlas tags: Step-Out Extension, Inferred Resource, QA/QC Disclosed

Myriad Uranium's Phase II drilling at the Copper Mountain project in Wyoming is expanding the mineralised footprint beyond the 26.63 Mlb historical resource. Modern chemical assays from Phase I showed grades 20-60% higher than historical gamma-probe data, and recent Phase II results at Lucky Cliff and Gem have intersected new mineralisation.

## US Gold Corp's CK Gold Adds Resource & Aggregate Upside Beyond the Feasibility Study

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/us-gold-corp-s-ck-gold-adds-resource-aggregate-upside-beyond-the-feasibility-stu--770d161b-1415-45d9-8b97-e63d2adb53ee) · [Markdown](https://atlas-extractions.minestarters.com/news/us-gold-corp-s-ck-gold-adds-resource-aggregate-upside-beyond-the-feasibility-stu--770d161b-1415-45d9-8b97-e63d2adb53ee.md)
- Original announcement: 2026-09-11T00:00:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: US Gold Corp (USAU)
- Original source: [cruxinvestor](https://www.cruxinvestor.com/posts/us-gold-corps-ck-gold-adds-resource-aggregate-upside-beyond-the-feasibility-study)
- Atlas sentiment: 0.226
- Atlas tags: Resource Update

US Gold Corp has identified significant upside at its CK Gold project in Wyoming, including 590,000 gold-equivalent ounces of M&I resources targeted for conversion to reserves and 677,000 gold-equivalent ounces of inferred resources. Additionally, the company has a non-binding LOI for potential aggregate and rail-ballast offtake of 1 million tonnes per year.

## Premier American Uranium Identifies Multiple Mineralized Uranium Trends in Ongoing Drilling at Kaycee, Wyoming

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/premier-american-uranium-identifies-multiple-mineralized-uranium-trends-in-ongoi--d028e4b9-7423-4644-9948-065b2de20daf) · [Markdown](https://atlas-extractions.minestarters.com/news/premier-american-uranium-identifies-multiple-mineralized-uranium-trends-in-ongoi--d028e4b9-7423-4644-9948-065b2de20daf.md)
- Original announcement: 2026-08-17T00:00:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Premier American Uranium Inc. (PUR)
- Original source: [globenewswire](https://www.globenewswire.com/news-release/2026/08/17/3345966/0/en/premier-american-uranium-identifies-multiple-mineralized-uranium-trends-in-ongoing-drilling-at-kaycee-wyoming.html)
- Atlas sentiment: 0.315
- Atlas tags: True Width Disclosed, QA/QC Disclosed

Premier American Uranium Inc. announced encouraging mid-season results from its 2026 exploration drilling program at the Kaycee Project in Wyoming. The program has completed 41,960 feet of drilling, identifying multiple uranium mineralized trends in two distinct sandstone units, with indications of stacked roll fronts. The company aims to advance these trends and build geological understanding to ultimately define a meaningful uranium resource.

## Noble Plains Uranium Intersects Uranium in all Drill Holes at Shirley Central Project, Wyoming

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/noble-plains-uranium-intersects-uranium-in-all-drill-holes-at-shirley-central-pr--77ffc48c-10e9-4409-a69c-0708ca8c4892) · [Markdown](https://atlas-extractions.minestarters.com/news/noble-plains-uranium-intersects-uranium-in-all-drill-holes-at-shirley-central-pr--77ffc48c-10e9-4409-a69c-0708ca8c4892.md)
- Original announcement: 2026-08-10T12:15:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Noble Plains Uranium Corp. (NOBL)
- Original source: [tmx](https://money.tmx.com/en/quote/NOBL/news/8067363787012546/noble-plains-uranium-intersects-uranium-in-all-drill-holes-at-shirley-central-pr)
- Atlas sentiment: 0.493
- Atlas tags: True Width Disclosed, QA/QC Disclosed

Noble Plains Uranium has successfully completed a seven-hole confirmation drill program at the Shirley Central Project in Wyoming, intersecting uranium mineralization in every hole. The results validate the company's historical database and confirm the presence of uranium roll-front mineralization, positioning the project for a future mineral resource estimate.

## Noble Plains Uranium Completes Shirley Central Historical Drill Database, Unlocking 341 Uranium Intercepts

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/noble-plains-uranium-completes-shirley-central-historical-drill-database-unlocki--0633641c-892d-4893-8bbf-3a93c3084618) · [Markdown](https://atlas-extractions.minestarters.com/news/noble-plains-uranium-completes-shirley-central-historical-drill-database-unlocki--0633641c-892d-4893-8bbf-3a93c3084618.md)
- Original announcement: 2026-07-09T12:48:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Noble Plains Uranium Corp. (NOBL)
- Original source: [tmx](https://money.tmx.com/en/quote/NOBL/news/5281707918201327/noble-plains-uranium-completes-shirley-central-historical-drill-database-unlocki)
- Atlas sentiment: 0.358
- Atlas tags: QA/QC Disclosed, Nearology Play

Noble Plains Uranium has completed the AI-powered digitization of 1,211 historical drillholes at the Shirley Central Project in Wyoming. This process identified 341 uranium intercepts, including standout high-grade intervals, which will be validated by a planned seven-hole confirmation drilling program.

## Premier American Uranium Expands and Further Defines Uranium Mineralization at Kaycee Project, Wyoming with Initial 2026 Drill Results

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/premier-american-uranium-expands-and-further-defines-uranium-mineralization-at-k--13e99b54-849c-4338-b07f-6730d0383a35) · [Markdown](https://atlas-extractions.minestarters.com/news/premier-american-uranium-expands-and-further-defines-uranium-mineralization-at-k--13e99b54-849c-4338-b07f-6730d0383a35.md)
- Original announcement: 2026-06-17T11:00:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Premier American Uranium Inc. (PUR)
- Original source: [tmx](https://money.tmx.com/en/quote/PUR/news/7794191648390352/premier-american-uranium-expands-and-further-defines-uranium-mineralization-at-k)
- Atlas sentiment: 0.234
- Atlas tags: QA/QC Disclosed, True Width Disclosed

Premier American Uranium has released initial 2026 drill results from its Kaycee Project in Wyoming, showing expanded uranium mineralization at the Outpost target. The program has completed 17,100 ft of drilling to date, with significant intercepts reported via gamma-ray logging.

## Noble Plains Uranium Files NI 43-101 Technical Report on Maiden Resource at Duck Creek, Wyoming

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/noble-plains-uranium-files-ni-43-101-technical-report-on-maiden-resource-at-duck--d784e469-6499-49d2-a7b0-5b8ca56913fb) · [Markdown](https://atlas-extractions.minestarters.com/news/noble-plains-uranium-files-ni-43-101-technical-report-on-maiden-resource-at-duck--d784e469-6499-49d2-a7b0-5b8ca56913fb.md)
- Original announcement: 2026-06-04T13:00:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Noble Plains Uranium Corp. (NOBL)
- Original source: [tmx](https://money.tmx.com/en/quote/NOBL/news/6101673955178480/noble-plains-uranium-files-ni-43-101-technical-report-on-maiden-resource-at-duck)
- Atlas sentiment: 0.483
- Atlas tags: Maiden Resource, NI 43-101 Compliant, QP/CP Signed

Noble Plains Uranium has filed a NI 43-101 Technical Report confirming a maiden uranium resource at the Duck Creek Project in Wyoming. The resource includes 4.29 Mt at 0.062% U3O8 in the Indicated category and 0.84 Mt at 0.09% U3O8 in the Inferred category, both exceeding previous exploration targets.

## Strathmore Confirms 85% Mineralization Hit Rate at Agate

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/strathmore-confirms-85-mineralization-hit-rate-at-agate--b179daf6-3f1d-4e89-af4c-50d2f9cf50c7) · [Markdown](https://atlas-extractions.minestarters.com/news/strathmore-confirms-85-mineralization-hit-rate-at-agate--b179daf6-3f1d-4e89-af4c-50d2f9cf50c7.md)
- Original announcement: 2026-05-20T15:42:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Strathmore Plus Uranium Corporation (SUU)
- Original source: [yahoo_press](https://finance.yahoo.com/sectors/energy/articles/strathmore-confirms-85-mineralization-hit-154200588.html)
- Atlas sentiment: 0.131
- Atlas tags: Nearology Play

Strathmore Plus Uranium Corporation has announced uranium assay results from its Agate Project in Wyoming, reporting an 85% mineralization hit rate. The project is located in the Shirley Basin District, adjacent to assets held by Cameco and UEC.

## Strathmore Hits 81% Mineralization Rate and Advances Agate Expansion

- Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/strathmore-hits-81-mineralization-rate-and-advances-agate-expansion--407ab3da-2c45-44aa-8bea-61c5f2566475) · [Markdown](https://atlas-extractions.minestarters.com/news/strathmore-hits-81-mineralization-rate-and-advances-agate-expansion--407ab3da-2c45-44aa-8bea-61c5f2566475.md)
- Original announcement: 2026-05-05T09:00:00.000Z
- Atlas analysis published: Unknown date
- Atlas analysis updated: Unknown date
- Company: Strathmore Plus Uranium Corporation (SUU)
- Original source: [yahoo_press](https://finance.yahoo.com/sectors/energy/articles/strathmore-hits-81-mineralization-rate-090000369.html)
- Atlas sentiment: 0.436
- Atlas tags: Step-Out Extension, exploration_4

Strathmore Plus Uranium Corporation has announced successful Spring 2026 exploration drilling at its Agate Project in Wyoming. The program delineated a new mineralized trend over 2,500 feet and extended the known Lower Sand trend.

# Atlas tag definitions

- **Bonanza Intercept:** Exceptionally high-grade zone, well above the deposit-type norm.
- **Metal Equivalent Opaque:** Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used. Requires an actual metal equivalent grade; a combined elemental basket such as PGE is not a metal equivalent.
- **True Width Disclosed:** Actual thickness perpendicular to structure is stated, not just downhole length.
- **Apparent Width Only:** Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
- **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.
- **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.
- **Cut-off Undisclosed:** Cut-off grade not disclosed — cannot assess comparability to prior estimates or peers.
- **Step-Out Extension:** Mineralization extended beyond the previously known limit.
- **Infill Drilling:** Confirmatory drilling to raise resource confidence, not new discovery.
- **Stale Data Re-release:** Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
- **Deleterious Elements Present:** A source-stated penalty, refractory or recovery concern in the fact's scope. Element detection alone, including measured elements explicitly below penalty thresholds, does not trigger this tag. Respect negation and retain a separately stated concern even when another risk is explicitly absent.
- **Refractory Ore:** Complex mineralogy requiring oxidation or other special processing before recovery.
- **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.
- **Inferred Resource:** Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
- **All Inferred:** M&I share below the weak bound — very early stage, no engineering confidence.
- **Tonnage Growth:** Tonnage increase reaching the strong tier 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.
- **Category Upgrade:** Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.
- **Tonnage Decline:** Resource tonnage decreased vs prior estimate — pit optimization removed marginal material or geological model revised down.
- **Grade Decline:** Average grade fell below the red-flag bound vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling.
- **Contained Metal Decline:** Contained metal decreased vs prior despite tonnage growth — grade dilution exceeds volume gain.
- **Category Downgrade:** Resource confidence decreased — Measured downgraded to Indicated, or Indicated to Inferred. Unusual and concerning.
- **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 reduced beyond the suspicious bound 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.
- **Stale Estimate:** Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
- **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.
- **Historical Estimate Only:** Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling.
- **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. No prior estimate exists, so every change band is not applicable.
- **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.
- **DFS Bankable:** AACE Class 2-1 study complete and within the staleness window.
- **PFS Complete:** AACE Class 3 study complete.
- **PEA Only:** Only Class 4 / Initial Assessment economics available. Not bankable.
- **No Study:** No formal economic study — no engineering basis for the economics quoted.
- **Stale Study:** Beyond the staleness window measured from the estimate base date.
- **Inferred Heavy Feed:** Material Inferred share of LOM mill feed, or the share is undisclosed.
- **Resource Governance Undisclosed:** No QA/QC, top-cut methodology or QP independence disclosed. Caps study quality at the moderate tier.
- **NPV Cut vs Prior Study:** A restated study reduces NPV materially against its own predecessor on the same asset.
- **High IRR:** Post-tax real unlevered IRR in the strong tier or better.
- **Low IRR:** IRR below the moderate tier.
- **Below Jurisdiction Hurdle:** IRR below the greenfield or brownfield hurdle for its jurisdiction tier.
- **IRR Basis Undisclosed:** Real vs nominal not stated, so the tier is not comparable across studies.
- **Undervalued PNAV:** Funding-adjusted P/NAV in the strong tier or better.
- **Overvalued PNAV:** Funding-adjusted P/NAV in the red-flag tier.
- **Fast Payback:** Payback in the strong tier or better, on the required basis.
- **Slow Payback:** Payback in the weak tier or worse.
- **Bottom Quartile Cost:** P0-25 of the relevant commodity cost curve.
- **Top Quartile Cost:** P75-100 of the relevant commodity cost curve — first to cut in a downturn.
- **Cost Basis Undisclosed:** By-product vs co-product not stated, so quartile placement is unreliable.
- **Low Capital Intensity:** Below the benchmark for its project type.
- **High Capital Intensity:** Above the benchmark for its project type.
- **Conservative Pricing:** Conservative on the worst of the spot, 3-year and consensus comparisons.
- **Aggressive Pricing:** The study only works on a stretched price deck.
- **No Price Sensitivity:** No price sensitivity disclosed — treated as a deliberate signal, not a neutral gap.
- **No Discount Rate Sensitivity:** Blocks NPV normalisation to the common rate without reconstruction.
- **Price Deck Unstructured:** Prices given only as free text, so conservatism cannot be scored.
- **Long Reserve Life:** Reserve life index in the top tier of the single ladder.
- **Short Reserve Life:** Reserve life index in the critical tier.
- **Resource Life Upside:** Wide gap between reserve life and resource life — conversion upside rather than discovery dependence.
- **Fully Funded:** Funding coverage at or above 1.0x counting committed facilities only.
- **Material Funding Gap:** Funding coverage below the substantially-funded band.
- **Funding Gap Exceeds Market Cap:** Red flag regardless of headline NPV — the upside is not reachable by the current equity holder.
- **Encumbered by Stream:** An existing stream or royalty reduces attributable NAV and restricts future financing.
- **Stability Agreement:** Fiscal terms fixed, with a term covering the mine life.
- **High Government Take:** Total government take above the regional norm as a share of pre-tax cash flow.
- **Fully Permitted:** Key permits granted with no unresolved challenge.
- **Permit Challenge Outstanding:** An appeal or legal challenge is unresolved, which can defer first production indefinitely.
- **No Community Agreement:** Permits held but no IBA or benefit agreement — the start date is unsupported.
- **Closure Underprovisioned:** Closure provision materially below peers, unfunded, or undisclosed.
- **Upstream TSF:** Upstream tailings construction, which is banned in Brazil and Ecuador.