# American Rare Earths Reports Strong Initial Assay Results from 2026 Feasibility Drilling at Halleck Creek Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23 Original source: 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 Publisher: globenewswire Original announcement: 2026-09-21T00:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: American Rare Earths - Ticker: ARR - Exchange: Unavailable - Region: Wyoming - Primary commodity: Rare earths - Secondary commodities: None reported - Document categories: Drill results, Economic study, Resource update - Extracted: 2026-09-21 16:34:55 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary 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. Reasoning: The initial assay results from the Feasibility Study drilling program at Halleck Creek are strong, confirming broad, high-grade rare earth mineralization consistent with the existing geological model. The program is designed to increase geological confidence and support future resource classification and mine planning, indicating progress towards development. However, the lack of true width disclosure for the intercepts is a minor negative. - Positive factor: High-grade TREO intercepts, with a pooled average of 3,497 ppm TREO, supporting the robustness of near-surface mineralization. - Positive factor: Broad, continuous mineralization confirmed across all six holes, consistent with the existing geological model. - Positive factor: Feasibility Study drilling program aims to increase geological confidence and support future Mineral Resource classification and mine-planning studies. - Positive factor: Strong QA/QC disclosure with certified lab results from ALS Global and Competent Person sign-off. - Negative factor: True width is not known for the reported intervals, which may overstate true thickness. - Negative factor: Results from 12 additional holes are still outstanding, so the full picture is not yet available. Facts used in scoring: 51 ## Classification and evidence **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: The release explicitly states 'Certified, QA/QC-verified assay results' and mentions 'ALS Global' as the certified laboratory, and a Competent Person has signed off. Evidence · text > Certified, QA/QC-verified assay results from the first six HQ core holes of the 2026 Feasibility Study drilling program confirm broad, near-surface rare earth mineralization at the Cowboy State Mine, Red Mountain **Apparent Width Only** Polarity: negative Definition: Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness. Why it applies: The document explicitly states that 'All reported intervals are downhole lengths; true width is not known for these holes'. Evidence · text > All reported intervals are downhole lengths; true width is not known for these holes \(see Appendix A, Section 2, "Relationship between mineralisation widths and intercept lengths"\). **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: The document clearly states the compositing methodology, including a 1,000 ppm TREO cut-off, maximum 2.0 m internal dilution, and minimum 3.0 m interval length. Evidence · text > Composited using sample-length-weighted averaging of certified assays meeting a 1,000 ppm TREO cut-off — the same cut-off grade basis the Company applies to the current Cowboy State Mine Mineral Resource \(ASX release, 19 November 2025\). Internal dilution of up to 2.0 m of sub-cut-off material is allowed within an interval; minimum reportable interval length is 3.0 m. **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: The drilling program is part of a Feasibility Study and is intended to 'increase geological confidence and support future Mineral Resource classification and subsequent mine-planning studies', which aligns with infill drilling objectives. Evidence · text > These holes are intended to increase geological confidence and support future Mineral Resource classification and subsequent mine-planning studies. ## Extracted facts Stored fact records: 50. Some facts used in scoring do not have a stored record. ## Drill Results (48) ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-0) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3796 - Grade Unit: ppm - Intercept: 99.44 m - From: 0 m - To: 99.44 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:0-99.44 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This intercept shows a high TREO grade over a substantial width, supporting the project's resource potential and contributing to the Feasibility Study. The lack of true width is a minor concern. - Positive factor: High TREO grade \(3796 ppm\) significantly above the 1000 ppm cut-off. - Positive factor: Broad intercept length \(99.44 m\) indicates significant mineralization. - Positive factor: Part of a Feasibility Study drilling program to increase resource confidence. - Negative factor: True width is not known, potentially overstating the actual thickness. Evidence · table > 3796 Context: 99.44 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-1) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1088 - Grade Unit: ppm - Intercept: 99.44 m - From: 0 m - To: 99.44 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:0-99.44 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The presence of a notable MREO grade within this broad intercept is positive, as MREO are key economic drivers for rare earth projects. The lack of true width is a minor concern. - Positive factor: Significant MREO grade \(1088 ppm\) within a broad mineralized zone. - Positive factor: MREO are critical for magnet production, adding value to the rare earth mineralization. - Negative factor: True width is not known. Evidence · table > 1088 Context: 99.44 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-2) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3213 - Grade Unit: ppm - Intercept: 99.44 m - From: 0 m - To: 99.44 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:0-99.44 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The high LREO grade within this broad intercept is a positive indicator for the overall rare earth endowment of the project. The lack of true width is a minor concern. - Positive factor: High LREO grade \(3213 ppm\) contributing significantly to the overall TREO content. - Positive factor: LREO are a major component of rare earth deposits and contribute to project economics. - Negative factor: True width is not known. Evidence · table > 3213 Context: 99.44 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-3) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 583 - Grade Unit: ppm - Intercept: 99.44 m - From: 0 m - To: 99.44 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:0-99.44 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content, while lower than LREO, is a positive as these elements are often critical and valuable. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(583 ppm\) adds to the overall value proposition of the rare earth deposit. - Positive factor: HREO are often strategic and command higher prices. - Negative factor: True width is not known. Evidence · table > 583 Context: 99.44 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-4) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 2837 - Grade Unit: ppm - Intercept: 25.83 m - From: 102.19 m - To: 128.02 m - Intercept Depth: 102.19 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:102.19-128.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is another strong intercept in the same hole, confirming continuous mineralization at depth. The lack of true width is a minor concern. - Positive factor: High TREO grade \(2837 ppm\) well above the 1000 ppm cut-off. - Positive factor: Adds to the overall mineralized footprint within the hole. - Negative factor: True width is not known. Evidence · table > 2837 Context: 25.83 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-5) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 863 - Grade Unit: ppm - Intercept: 25.83 m - From: 102.19 m - To: 128.02 m - Intercept Depth: 102.19 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:102.19-128.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The MREO content in this deeper intercept is a positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of MREO \(863 ppm\) at this depth adds to the overall economic potential. - Negative factor: True width is not known. Evidence · table > 863 Context: 25.83 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-6) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 2158 - Grade Unit: ppm - Intercept: 25.83 m - From: 102.19 m - To: 128.02 m - Intercept Depth: 102.19 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:102.19-128.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The LREO content in this intercept is positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Good LREO grade \(2158 ppm\) at this depth, contributing to the overall rare earth content. - Negative factor: True width is not known. Evidence · table > 2158 Context: 25.83 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM051 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-7) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM051 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 679 - Grade Unit: ppm - Intercept: 25.83 m - From: 102.19 m - To: 128.02 m - Intercept Depth: 102.19 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM051:102.19-128.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: HREO content \(679 ppm\) at this depth adds to the overall value of the rare earth mineralization. - Negative factor: True width is not known. Evidence · table > 679 Context: 25.83 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-8) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3854 - Grade Unit: ppm - Intercept: 102.63 m - From: 5.79 m - To: 108.42 m - Intercept Depth: 5.79 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:5.79-108.42 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is an excellent, broad, near-surface intercept with high TREO grades, strongly supporting the project's economic viability and resource model. The lack of true width is a minor concern. - Positive factor: Very high TREO grade \(3854 ppm\) over a significant width \(102.63 m\). - Positive factor: Near-surface mineralization supports the conceptual open-pit approach. - Negative factor: True width is not known. Evidence · table > 3854 Context: 102.63 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-9) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1079 - Grade Unit: ppm - Intercept: 102.63 m - From: 5.79 m - To: 108.42 m - Intercept Depth: 5.79 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:5.79-108.42 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The significant MREO content in this broad, near-surface intercept is a strong positive for the project's economic potential. The lack of true width is a minor concern. - Positive factor: High MREO grade \(1079 ppm\) within a very broad, near-surface intercept. - Positive factor: MREO are critical for magnet production, enhancing the project's value. - Negative factor: True width is not known. Evidence · table > 1079 Context: 102.63 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-10) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3373 - Grade Unit: ppm - Intercept: 102.63 m - From: 5.79 m - To: 108.42 m - Intercept Depth: 5.79 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:5.79-108.42 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very high LREO content in this broad, near-surface intercept is a strong positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Very high LREO grade \(3373 ppm\) within a broad, near-surface intercept, contributing significantly to overall TREO. - Negative factor: True width is not known. Evidence · table > 3373 Context: 102.63 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-11) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 480 - Grade Unit: ppm - Intercept: 102.63 m - From: 5.79 m - To: 108.42 m - Intercept Depth: 5.79 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:5.79-108.42 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this broad, near-surface intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(480 ppm\) adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 480 Context: 102.63 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-12) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3525 - Grade Unit: ppm - Intercept: 8.64 m - From: 116.33 m - To: 124.97 m - Intercept Depth: 116.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:116.33-124.97 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This intercept shows high TREO grades at a deeper interval, indicating continuity of mineralization. The lack of true width is a minor concern. - Positive factor: High TREO grade \(3525 ppm\) well above the 1000 ppm cut-off. - Positive factor: Confirms mineralization at deeper levels within the hole. - Negative factor: True width is not known. Evidence · table > 3525 Context: 8.64 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-13) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 919 - Grade Unit: ppm - Intercept: 8.64 m - From: 116.33 m - To: 124.97 m - Intercept Depth: 116.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:116.33-124.97 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The MREO content in this deeper intercept is a positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of MREO \(919 ppm\) at this depth adds to the overall economic potential. - Negative factor: True width is not known. Evidence · table > 919 Context: 8.64 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-14) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3265 - Grade Unit: ppm - Intercept: 8.64 m - From: 116.33 m - To: 124.97 m - Intercept Depth: 116.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:116.33-124.97 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The LREO content in this intercept is positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Good LREO grade \(3265 ppm\) at this depth, contributing to the overall rare earth content. - Negative factor: True width is not known. Evidence · table > 3265 Context: 8.64 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM052 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-15) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM052 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 260 - Grade Unit: ppm - Intercept: 8.64 m - From: 116.33 m - To: 124.97 m - Intercept Depth: 116.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM052:116.33-124.97 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(260 ppm\) at this depth adds to the overall value of the rare earth mineralization. - Negative factor: True width is not known. Evidence · table > 260 Context: 8.64 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-16) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3669 - Grade Unit: ppm - Intercept: 65.93 m - From: 3.96 m - To: 69.89 m - Intercept Depth: 3.96 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:3.96-69.89 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is an excellent, broad, near-surface intercept with high TREO grades, strongly supporting the project's economic viability and resource model. The lack of true width is a minor concern. - Positive factor: High TREO grade \(3669 ppm\) over a significant width \(65.93 m\). - Positive factor: Near-surface mineralization supports the conceptual open-pit approach. - Negative factor: True width is not known. Evidence · table > 3669 Context: 65.93 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-17) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1073 - Grade Unit: ppm - Intercept: 65.93 m - From: 3.96 m - To: 69.89 m - Intercept Depth: 3.96 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:3.96-69.89 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The significant MREO content in this broad, near-surface intercept is a strong positive for the project's economic potential. The lack of true width is a minor concern. - Positive factor: High MREO grade \(1073 ppm\) within a broad, near-surface intercept. - Positive factor: MREO are critical for magnet production, enhancing the project's value. - Negative factor: True width is not known. Evidence · table > 1073 Context: 65.93 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-18) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3215 - Grade Unit: ppm - Intercept: 65.93 m - From: 3.96 m - To: 69.89 m - Intercept Depth: 3.96 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:3.96-69.89 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very high LREO content in this broad, near-surface intercept is a strong positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Very high LREO grade \(3215 ppm\) within a broad, near-surface intercept, contributing significantly to overall TREO. - Negative factor: True width is not known. Evidence · table > 3215 Context: 65.93 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-19) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 454 - Grade Unit: ppm - Intercept: 65.93 m - From: 3.96 m - To: 69.89 m - Intercept Depth: 3.96 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:3.96-69.89 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this broad, near-surface intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(454 ppm\) adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 454 Context: 65.93 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-20) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3864 - Grade Unit: ppm - Intercept: 40.39 m - From: 84.37 m - To: 124.76 m - Intercept Depth: 84.37 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:84.37-124.76 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is an excellent intercept with high TREO grades at a deeper interval, indicating continuity of mineralization. The lack of true width is a minor concern. - Positive factor: Very high TREO grade \(3864 ppm\) over a significant width \(40.39 m\). - Positive factor: Confirms mineralization at deeper levels within the hole. - Negative factor: True width is not known. Evidence · table > 3864 Context: 40.39 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-21) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1016 - Grade Unit: ppm - Intercept: 40.39 m - From: 84.37 m - To: 124.76 m - Intercept Depth: 84.37 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:84.37-124.76 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The significant MREO content in this deeper intercept is a strong positive for the project's economic potential. The lack of true width is a minor concern. - Positive factor: High MREO grade \(1016 ppm\) at this depth adds to the overall economic potential. - Negative factor: True width is not known. Evidence · table > 1016 Context: 40.39 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-22) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3546 - Grade Unit: ppm - Intercept: 40.39 m - From: 84.37 m - To: 124.76 m - Intercept Depth: 84.37 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:84.37-124.76 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very high LREO content in this deeper intercept is a strong positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Very high LREO grade \(3546 ppm\) at this depth, contributing significantly to overall TREO. - Negative factor: True width is not known. Evidence · table > 3546 Context: 40.39 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM053 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-23) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM053 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 318 - Grade Unit: ppm - Intercept: 40.39 m - From: 84.37 m - To: 124.76 m - Intercept Depth: 84.37 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM053:84.37-124.76 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this deeper intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(318 ppm\) at this depth adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 318 Context: 40.39 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-24) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3077 - Grade Unit: ppm - Intercept: 12.1 m - From: 0 m - To: 12.1 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:0-12.1 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is a strong, near-surface intercept with high TREO grades, supporting the project's economic viability and resource model. The lack of true width is a minor concern. - Positive factor: High TREO grade \(3077 ppm\) over a good width \(12.1 m\). - Positive factor: Near-surface mineralization supports the conceptual open-pit approach. - Negative factor: True width is not known. Evidence · table > 3077 Context: 12.1 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-25) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 846 - Grade Unit: ppm - Intercept: 12.1 m - From: 0 m - To: 12.1 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:0-12.1 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The MREO content in this near-surface intercept is a positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of MREO \(846 ppm\) within a near-surface intercept adds to the overall economic potential. - Negative factor: True width is not known. Evidence · table > 846 Context: 12.1 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-26) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 2683 - Grade Unit: ppm - Intercept: 12.1 m - From: 0 m - To: 12.1 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:0-12.1 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The LREO content in this near-surface intercept is positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Good LREO grade \(2683 ppm\) within a near-surface intercept, contributing to the overall TREO. - Negative factor: True width is not known. Evidence · table > 2683 Context: 12.1 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-27) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 394 - Grade Unit: ppm - Intercept: 12.1 m - From: 0 m - To: 12.1 m - Intercept Depth: 0 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:0-12.1 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this near-surface intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(394 ppm\) adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 394 Context: 12.1 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-28) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 4084 - Grade Unit: ppm - Intercept: 78.42 m - From: 14.33 m - To: 92.75 m - Intercept Depth: 14.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:14.33-92.75 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is an outstanding intercept with very high TREO grades over a substantial width, strongly supporting the project's economic viability and resource model. The lack of true width is a minor concern. - Positive factor: Exceptional TREO grade \(4084 ppm\) over a very broad width \(78.42 m\). - Positive factor: Confirms significant mineralization at shallow to moderate depths. - Negative factor: True width is not known. Evidence · table > 4084 Context: 78.42 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-29) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1151 - Grade Unit: ppm - Intercept: 78.42 m - From: 14.33 m - To: 92.75 m - Intercept Depth: 14.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:14.33-92.75 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very significant MREO content in this broad intercept is a strong positive for the project's economic potential. The lack of true width is a minor concern. - Positive factor: Very high MREO grade \(1151 ppm\) within a very broad intercept. - Positive factor: MREO are critical for magnet production, significantly enhancing the project's value. - Negative factor: True width is not known. Evidence · table > 1151 Context: 78.42 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-30) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3585 - Grade Unit: ppm - Intercept: 78.42 m - From: 14.33 m - To: 92.75 m - Intercept Depth: 14.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:14.33-92.75 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very high LREO content in this broad intercept is a strong positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Very high LREO grade \(3585 ppm\) within a very broad intercept, contributing significantly to overall TREO. - Negative factor: True width is not known. Evidence · table > 3585 Context: 78.42 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-31) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 499 - Grade Unit: ppm - Intercept: 78.42 m - From: 14.33 m - To: 92.75 m - Intercept Depth: 14.33 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:14.33-92.75 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this broad intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(499 ppm\) adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 499 Context: 78.42 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-32) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3754 - Grade Unit: ppm - Intercept: 25.47 m - From: 96.56 m - To: 122.03 m - Intercept Depth: 96.56 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:96.56-122.03 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is an excellent intercept with high TREO grades at a deeper interval, indicating continuity of mineralization. The lack of true width is a minor concern. - Positive factor: High TREO grade \(3754 ppm\) over a significant width \(25.47 m\). - Positive factor: Confirms mineralization at deeper levels within the hole. - Negative factor: True width is not known. Evidence · table > 3754 Context: 25.47 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-33) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1045 - Grade Unit: ppm - Intercept: 25.47 m - From: 96.56 m - To: 122.03 m - Intercept Depth: 96.56 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:96.56-122.03 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The significant MREO content in this deeper intercept is a strong positive for the project's economic potential. The lack of true width is a minor concern. - Positive factor: High MREO grade \(1045 ppm\) at this depth adds to the overall economic potential. - Negative factor: True width is not known. Evidence · table > 1045 Context: 25.47 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-34) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3401 - Grade Unit: ppm - Intercept: 25.47 m - From: 96.56 m - To: 122.03 m - Intercept Depth: 96.56 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:96.56-122.03 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very high LREO content in this deeper intercept is a strong positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Very high LREO grade \(3401 ppm\) at this depth, contributing significantly to overall TREO. - Negative factor: True width is not known. Evidence · table > 3401 Context: 25.47 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM054 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-35) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM054 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 353 - Grade Unit: ppm - Intercept: 25.47 m - From: 96.56 m - To: 122.03 m - Intercept Depth: 96.56 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM054:96.56-122.03 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this deeper intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(353 ppm\) at this depth adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 353 Context: 25.47 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-36) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3630 - Grade Unit: ppm - Intercept: 7.67 m - From: 4.88 m - To: 12.55 m - Intercept Depth: 4.88 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:4.88-12.55 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is a strong, near-surface intercept with high TREO grades, supporting the project's economic viability and resource model. The lack of true width is a minor concern. - Positive factor: High TREO grade \(3630 ppm\) over a good width \(7.67 m\). - Positive factor: Near-surface mineralization supports the conceptual open-pit approach. - Negative factor: True width is not known. Evidence · table > 3630 Context: 7.67 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-37) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1012 - Grade Unit: ppm - Intercept: 7.67 m - From: 4.88 m - To: 12.55 m - Intercept Depth: 4.88 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:4.88-12.55 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The MREO content in this near-surface intercept is a positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: High MREO grade \(1012 ppm\) within a near-surface intercept adds to the overall economic potential. - Negative factor: True width is not known. Evidence · table > 1012 Context: 7.67 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-38) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3060 - Grade Unit: ppm - Intercept: 7.67 m - From: 4.88 m - To: 12.55 m - Intercept Depth: 4.88 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:4.88-12.55 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The LREO content in this near-surface intercept is positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Good LREO grade \(3060 ppm\) within a near-surface intercept, contributing to the overall TREO. - Negative factor: True width is not known. Evidence · table > 3060 Context: 7.67 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-39) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 570 - Grade Unit: ppm - Intercept: 7.67 m - From: 4.88 m - To: 12.55 m - Intercept Depth: 4.88 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:4.88-12.55 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this near-surface intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(570 ppm\) adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 570 Context: 7.67 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-40) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 4221 - Grade Unit: ppm - Intercept: 110.02 m - From: 15 m - To: 125.02 m - Intercept Depth: 15 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:15-125.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is an outstanding intercept with very high TREO grades over a substantial width, strongly supporting the project's economic viability and resource model. The lack of true width is a minor concern. - Positive factor: Exceptional TREO grade \(4221 ppm\) over a very broad width \(110.02 m\). - Positive factor: Confirms significant mineralization at shallow to moderate depths. - Negative factor: True width is not known. Evidence · table > 4221 Context: 110.02 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-41) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1179 - Grade Unit: ppm - Intercept: 110.02 m - From: 15 m - To: 125.02 m - Intercept Depth: 15 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:15-125.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very significant MREO content in this broad intercept is a strong positive for the project's economic potential. The lack of true width is a minor concern. - Positive factor: Very high MREO grade \(1179 ppm\) within a very broad intercept. - Positive factor: MREO are critical for magnet production, significantly enhancing the project's value. - Negative factor: True width is not known. Evidence · table > 1179 Context: 110.02 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-42) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3628 - Grade Unit: ppm - Intercept: 110.02 m - From: 15 m - To: 125.02 m - Intercept Depth: 15 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:15-125.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very high LREO content in this broad intercept is a strong positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Very high LREO grade \(3628 ppm\) within a very broad intercept, contributing significantly to overall TREO. - Negative factor: True width is not known. Evidence · table > 3628 Context: 110.02 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM055 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-43) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM055 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 593 - Grade Unit: ppm - Intercept: 110.02 m - From: 15 m - To: 125.02 m - Intercept Depth: 15 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM055:15-125.02 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this broad intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(593 ppm\) adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 593 Context: 110.02 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM056 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-44) Halleck Creek Rare Earths · treo #### Identity - Hole ID: HC26-RM056 - Project: Halleck Creek Rare Earths - Commodity: treo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3951 - Grade Unit: ppm - Intercept: 191.11 m - From: 8.84 m - To: 199.95 m - Intercept Depth: 8.84 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM056:8.84-199.95 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: This is an outstanding, very broad, near-surface intercept with very high TREO grades, strongly supporting the project's economic viability and resource model. The lack of true width is a minor concern. - Positive factor: Exceptional TREO grade \(3951 ppm\) over an extremely broad width \(191.11 m\), representing one of the broadest mineralized intervals encountered. - Positive factor: Near-surface mineralization supports the conceptual open-pit approach. - Negative factor: True width is not known. Evidence · table > 3951 Context: 191.11 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM056 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-45) Halleck Creek Rare Earths · mreo #### Identity - Hole ID: HC26-RM056 - Project: Halleck Creek Rare Earths - Commodity: mreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 1101 - Grade Unit: ppm - Intercept: 191.11 m - From: 8.84 m - To: 199.95 m - Intercept Depth: 8.84 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM056:8.84-199.95 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very significant MREO content in this extremely broad intercept is a strong positive for the project's economic potential. The lack of true width is a minor concern. - Positive factor: Very high MREO grade \(1101 ppm\) within an extremely broad intercept. - Positive factor: MREO are critical for magnet production, significantly enhancing the project's value. - Negative factor: True width is not known. Evidence · table > 1101 Context: 191.11 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM056 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-46) Halleck Creek Rare Earths · lreo #### Identity - Hole ID: HC26-RM056 - Project: Halleck Creek Rare Earths - Commodity: lreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 3570 - Grade Unit: ppm - Intercept: 191.11 m - From: 8.84 m - To: 199.95 m - Intercept Depth: 8.84 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM056:8.84-199.95 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The very high LREO content in this extremely broad intercept is a strong positive for the project's overall rare earth endowment. The lack of true width is a minor concern. - Positive factor: Very high LREO grade \(3570 ppm\) within an extremely broad intercept, contributing significantly to overall TREO. - Negative factor: True width is not known. Evidence · table > 3570 Context: 191.11 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ### HC26-RM056 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-drill-facts-47) Halleck Creek Rare Earths · hreo #### Identity - Hole ID: HC26-RM056 - Project: Halleck Creek Rare Earths - Commodity: hreo - Region: wyoming - Reported Region: wyoming - Ticker: ARR #### Geometry - Grade: 381 - Grade Unit: ppm - Intercept: 191.11 m - From: 8.84 m - To: 199.95 m - Intercept Depth: 8.84 m #### Classification - Program: resource - Sample Type: drill - Group ID: HC26-RM056:8.84-199.95 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Global - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Deleterious - Deleterious Flag: No #### Metal Equivalent - Assumptions Disclosed: No #### Compositing - Cutoff Grade: 1000 - Cutoff Unit: ppm - Dilution Disclosed: Yes - Max Dilution: 2 m #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The HREO content in this extremely broad intercept is positive for the project's overall value. The lack of true width is a minor concern. - Positive factor: Presence of HREO \(381 ppm\) adds to the overall value proposition of the rare earth deposit. - Negative factor: True width is not known. Evidence · table > 381 Context: 191.11 #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Compositing Transparent** Polarity: positive Definition: Cut-off grade and internal dilution rules are clearly stated for reported intervals. Why it applies: cutoff\_grade and internal dilution are both stated **Infill Drilling** Polarity: neutral Definition: Confirmatory drilling to raise resource confidence, not new discovery. Why it applies: drill\_program\_type is "resource" ## Resource Estimates (2) ### Fact 1 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-resource-facts-49) Halleck Creek Rare Earths Project · rare\_earths Historical result Needs review: historical\_restatement #### Identity - Project: Halleck Creek Rare Earths Project - Commodity: rare\_earths - Region: wyoming - Reported Region: Wyoming - Ticker: ARR #### Resource scope - Estimate type: resource - Reporting standards: jorc - QP Signed: No - Resource group id: resource:6f11f3e4eeba017953df #### Resource Data - Tonnes: 2630000000 - Grade: 3292 - Grade Unit: ppm - Contained Metal: 8.65 - Contained Unit: mt #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-02-04T00:00:00.000Z #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The document references a previously reported JORC Mineral Resource Estimate for the Halleck Creek Project. While the numbers are significant, this is a historical estimate and not a new update, so its novelty is low. The lack of specific resource categories in this summary limits confidence. - Positive factor: Large resource size \(2.63 billion tonnes\) with a good TREO grade \(3,292 ppm\). - Negative factor: This is a historical estimate, referenced from a prior release, not a new update. - Negative factor: No specific resource category \(Measured, Indicated, Inferred\) is provided in this summary. Evidence · text > It hosts an allanite-dominant, near-surface REE system with a current JORC Mineral Resource Estimate of 2.63 billion tonnes at 3,292 ppm TREO for 8.65 million tonnes of contained rare earth oxides #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc ### Fact 2 [Link to this fact](https://atlas-extractions.minestarters.com/news/american-rare-earths-reports-strong-initial-assay-results-from-2026-feasibility--1850fb16-65db-4498-86f9-4583e1112e23#fact-resource-facts-50) Cowboy State Mine · rare\_earths Historical result Needs review: historical\_restatement #### Identity - Project: Cowboy State Mine - Commodity: rare\_earths - Region: wyoming - Reported Region: Wyoming - Ticker: ARR #### Resource scope - Estimate type: resource - QP Signed: No - Resource group id: resource:b56a4ed1d922d9fb0ef5 #### Resource Data - Tonnes: 547500000 - Cutoff Grade: 1000 - Cutoff Unit: ppm #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-11-19T00:00:00.000Z #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: The document references a previously reported resource for the Cowboy State Mine. While the tonnage is significant, this is a historical estimate and lacks grade and contained metal information in this context, limiting its utility as a new fact. - Positive factor: Significant tonnage \(547.5 Mt\) for the Cowboy State Mine at a stated cut-off grade. - Negative factor: This is a historical estimate, referenced from a prior release, not a new update. - Negative factor: No grade or contained metal is provided in this summary. Evidence · text > Cowboy State Mine \(547.5 Mt at a 1,000 ppm TREO cut-off\) is drawn from the Company's prior ASX disclosures dated 4 February 2025 and 19 November 2025 respectively #### Tags used in scoring **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.