# Ucore Updates Mineral Resource Estimate and Technical Report for Bokan Dotson-Ridge Rare Earth Property Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1 Original source: https://money.tmx.com/en/quote/UCU/news/5914929580804646/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri Publisher: tmx Original announcement: 2026-04-14T13:11:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Ucore Rare Metals Inc. - Ticker: UCU - Exchange: TSX - Region: Southeast Alaska - Primary commodity: Rare earth - Secondary commodities: None reported - Document categories: Resource update - Extracted: 2026-09-19 03:33:20 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Ucore Rare Metals Inc. has released an upgraded Mineral Resource Estimate for its Bokan Dotson-Ridge rare earth project in Southeast Alaska, effective April 9, 2026. The update includes 801,600 tonnes of new Measured resource derived from 2022 surface channel sampling, bringing the total resource to include Measured, Indicated, and Inferred categories with a high HREO concentration of 35-40%. Reasoning: The upgrade includes significant new measured mineralization from recent surface sampling, improving the resource profile and demonstrating high HREO value. - Positive factor: Addition of 801,600 tonnes of Measured resource from 2022 surface channel sampling - Positive factor: High HREO content \(35-40% of TREO\) - Positive factor: Resource remains open at depth and along strike - Positive factor: Compliance with NI 43-101 and SEC S-K 1300 - Negative factor: Exclusion of I&L Zone from current estimate Facts used in scoring: 9 ## Classification and evidence **Maiden Resource** Polarity: neutral Definition: First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. No prior estimate exists, so every change band is not applicable. Why it applies: The document describes an upgraded estimate but does not explicitly state it is the first formal MRE; however, it notes the addition of new mineralization to the total resource. Evidence · text > An additional 801,600 tonnes of newly estimated Measured mineralization... has now been added to the total Resource **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The release announces an upgraded mineral resource estimate. Evidence · text > Ucore Updates Mineral Resource Estimate **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: Jim Robinson, a P.Geo and independent geologist from Aurora Geosciences, is named as the responsible QP. Evidence · text > Mr. Jim Robinson... is an independent qualified person for the purposes of NI 43-101 standards **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The Technical Report and resource estimate were prepared in accordance with NI 43-101. Evidence · text > prepared in accordance with both National Instrument 43-101 and SEC Regulation S-K 1300 **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: The TREO cut-off grade is explicitly stated as 0.4%. Evidence · text > Assuming TREO cut-off of 0.4% ## Extracted facts Stored fact records: 9. Some facts used in scoring do not have a stored record. ## Resource Estimates (9) ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-0) Bokan Dotson-Ridge · rare earth #### Identity - Project: Bokan Dotson-Ridge - Commodity: rare earth - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:c3315d4dc0a65e7a801d #### Resource Data - Category: measured - Tonnes: 801600 - Grade: 0.6 - Grade Unit: % - Contained Metal: 4826 - Contained Unit: t - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: High-confidence measured resource added via recent sampling. - Positive factor: New measured mineralization added Evidence · table > 0.60 Context: 801,600 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-1) Bokan Dotson-Ridge · rare earth #### Identity - Project: Bokan Dotson-Ridge - Commodity: rare earth - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:c6f7f2181f2c17b1a1bd #### Resource Data - Category: indicated - Tonnes: 3369800 - Grade: 0.58 - Grade Unit: % - Contained Metal: 19545 - Contained Unit: t - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Standard indicated resource component. Evidence · table > 0.58 Context: 3,369,800 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-2) Bokan Dotson-Ridge · rare earth #### Identity - Project: Bokan Dotson-Ridge - Commodity: rare earth - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:8ed62bccd83663a462b9 #### Resource Data - Category: inferred - Tonnes: 980300 - Grade: 0.57 - Grade Unit: % - Contained Metal: 5568 - Contained Unit: t - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Inferred resource component. Evidence · table > 0.57 Context: 980,300 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-3) Bokan Dotson-Ridge · la2o3 #### Identity - Project: Bokan Dotson-Ridge - Commodity: la2o3 - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:9a837915ef39b81b338e #### Resource Data - Category: measured - Grade: 0.07 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide grade component. Evidence · table > 0.07 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-4) Bokan Dotson-Ridge · ce2o3 #### Identity - Project: Bokan Dotson-Ridge - Commodity: ce2o3 - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:9a837915ef39b81b338e #### Resource Data - Category: measured - Grade: 0.18 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide grade component. Evidence · table > 0.18 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-5) Bokan Dotson-Ridge · pr2o3 #### Identity - Project: Bokan Dotson-Ridge - Commodity: pr2o3 - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:9a837915ef39b81b338e #### Resource Data - Category: measured - Grade: 0.02 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide grade component. Evidence · table > 0.02 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-6) Bokan Dotson-Ridge · nd2o3 #### Identity - Project: Bokan Dotson-Ridge - Commodity: nd2o3 - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:9a837915ef39b81b338e #### Resource Data - Category: measured - Grade: 0.086 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide grade component. Evidence · table > 0.086 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-7) Bokan Dotson-Ridge · sm2o3 #### Identity - Project: Bokan Dotson-Ridge - Commodity: sm2o3 - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:9a837915ef39b81b338e #### Resource Data - Category: measured - Grade: 0.022 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide grade component. Evidence · table > 0.022 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/ucore-updates-mineral-resource-estimate-and-technical-report-for-bokan-dotson-ri--d661f2e8-3b55-40bb-9ca0-e5095cfe4be1#fact-resource-facts-8) Bokan Dotson-Ridge · y2o3 #### Identity - Project: Bokan Dotson-Ridge - Commodity: y2o3 - Region: usa\_ak - Reported Region: Southeast Alaska - Ticker: UCU #### Resource scope - Estimate type: resource - Effective date: 2026-04-09T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Jim Robinson - Resource group id: resource:9a837915ef39b81b338e #### Resource Data - Category: measured - Grade: 0.142 - Grade Unit: % - Cutoff Grade: 0.4 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-04-09 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Individual oxide grade component. Evidence · table > 0.142 Context: MEASURED #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ## 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.