# St Barbara updates PFS for 15-Mile processing hub Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/st-barbara-updates-pfs-for-15-mile-processing-hub--35aa1369-2794-4d5b-a91b-bbe7fdb01d2d Original source: https://www.canadianminingjournal.com/news/st-barbara-updates-pfs-for-15-mile-processing-hub/ Publisher: canadianminingjournal Original announcement: 2026-09-29T14:29:01.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-29T17:17:44.180Z Atlas analysis updated: 2026-09-29T17:17:44.180Z - Company: St Barbara - Ticker: SBM - Exchange: Unavailable - Region: Nova Scotia - Primary commodity: Gold - Secondary commodities: None reported - Document categories: Resource update - Extracted: 2026-09-29 17:17:44 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary St Barbara has updated its Preliminary Feasibility Study \(PFS\) for the 15-Mile processing hub in Nova Scotia, reporting 1.4 million oz of proven and probable gold reserves. The update improves project economics, including a 21% increase in NPV and an extended mine life of 13 years. Reasoning: The updated PFS shows significant growth in mine life and NPV, supported by robust reserve numbers and high IRR, despite a marginal increase in capital requirements. - Positive factor: Significant reserve scale of 1.4 million oz gold - Positive factor: Improved project economics with 21% NPV increase - Positive factor: High IRR of 81.6% - Positive factor: Strong liquidity with $424 million on hand - Positive factor: Ore is described as free-milling - Negative factor: Pre-production capital spend increased slightly from $283m to $289m Facts used in scoring: 5 ## Classification and evidence **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The document provides an updated Preliminary Feasibility Study \(PFS\) for the 15-Mile processing hub. Evidence · text > St Barbara \(ASX: SBM\) updates the preliminary feasibility study \(PFS\) for its 15-Mile processing hub **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 cut-off grade used for the resource is explicitly stated as 0.3 g/t gold. Evidence · text > using a cut-off grade of 0.3 g/t gold **Free Milling** Polarity: positive Story-specific tag Definition: Simple, clean ore amenable to standard processing without oxidation. Why it applies: The ore is explicitly described as free-milling based on previous experience. Evidence · text > the ore is free-milling and recoverable by conventional means ## Extracted facts Stored fact records: 5. Some facts used in scoring do not have a stored record. ## Resource Estimates (5) ### proven [Link to this fact](https://atlas-staging.minestarters.com/news/st-barbara-updates-pfs-for-15-mile-processing-hub--35aa1369-2794-4d5b-a91b-bbe7fdb01d2d#fact-resource-facts-0) 15-Mile processing hub · gold #### Identity - Project: 15-Mile processing hub - Commodity: gold - Region: canada\_ns - Reported Region: Nova Scotia - Ticker: SBM #### Resource scope - Estimate type: reserve - Resource group id: resource:055224272b51f4d71701 - Deposit or zone: 15-Mile, Old Austen and Old Mitchell - Mining method: open\_pit - Resource basis: gross #### Resource Data - Category: proven - Tonnes: 38700000 - Grade: 1.2 - Grade Unit: g/t - Contained Metal: 1400000 - Contained Unit: oz - Cutoff Grade: 0.3 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Significant reserve base reported for the project. - Positive factor: Large reserve scale Evidence · text > Proven and probable reserves at these sites total 1.4 million oz. in 38.7 million tonnes grading 1.2 g/t gold. #### Tags used in scoring **Proven Reserve** Polarity: positive Definition: Measured Resource with demonstrated economic viability after applying modifying factors. Why it applies: category is "proven" **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 QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### probable [Link to this fact](https://atlas-staging.minestarters.com/news/st-barbara-updates-pfs-for-15-mile-processing-hub--35aa1369-2794-4d5b-a91b-bbe7fdb01d2d#fact-resource-facts-1) 15-Mile processing hub · gold #### Identity - Project: 15-Mile processing hub - Commodity: gold - Region: canada\_ns - Reported Region: Nova Scotia - Ticker: SBM #### Resource scope - Estimate type: reserve - Resource group id: resource:f71db328e8eb6fd750c7 - Deposit or zone: 15-Mile, Old Austen and Old Mitchell - Mining method: open\_pit - Resource basis: gross #### Resource Data - Category: probable - Tonnes: 38700000 - Grade: 1.2 - Grade Unit: g/t - Contained Metal: 1400000 - Contained Unit: oz - Cutoff Grade: 0.3 - Cutoff Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Significant reserve base reported for the project. - Positive factor: Large reserve scale Evidence · text > Proven and probable reserves at these sites total 1.4 million oz. in 38.7 million tonnes grading 1.2 g/t gold. #### Tags used in scoring **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: category is "probable" **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 QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### measured [Link to this fact](https://atlas-staging.minestarters.com/news/st-barbara-updates-pfs-for-15-mile-processing-hub--35aa1369-2794-4d5b-a91b-bbe7fdb01d2d#fact-resource-facts-2) 15-Mile processing hub · gold #### Identity - Project: 15-Mile processing hub - Commodity: gold - Region: canada\_ns - Reported Region: Nova Scotia - Ticker: SBM #### Resource scope - Estimate type: resource - Resource group id: resource:144ed02c1472f9149934 - Deposit or zone: 15-Mile, Old Austen and Old Mitchell - Mining method: open\_pit #### Resource Data - Category: measured - Tonnes: 17600000 - Grade: 1.2 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Standard measured resource component of the PFS. Evidence · text > The PFS includes 17.6 million tonnes of measured resource grading 1.2 g/t gold #### 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 **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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/st-barbara-updates-pfs-for-15-mile-processing-hub--35aa1369-2794-4d5b-a91b-bbe7fdb01d2d#fact-resource-facts-3) 15-Mile processing hub · gold #### Identity - Project: 15-Mile processing hub - Commodity: gold - Region: canada\_ns - Reported Region: Nova Scotia - Ticker: SBM #### Resource scope - Estimate type: resource - Resource group id: resource:4a0658835fa073571517 - Deposit or zone: 15-Mile, Old Austen and Old Mitchell - Mining method: open\_pit #### Resource Data - Category: indicated - Tonnes: 38700000 - Grade: 1.3 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Standard indicated resource component of the PFS. Evidence · text > 38.7 million tonnes of indicated resource at 1.3 g/t gold #### 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 **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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/st-barbara-updates-pfs-for-15-mile-processing-hub--35aa1369-2794-4d5b-a91b-bbe7fdb01d2d#fact-resource-facts-4) 15-Mile processing hub · gold #### Identity - Project: 15-Mile processing hub - Commodity: gold - Region: canada\_ns - Reported Region: Nova Scotia - Ticker: SBM #### Resource scope - Estimate type: resource - Resource group id: resource:d0eab7bd67ca0119fe56 - Deposit or zone: 15-Mile, Old Austen and Old Mitchell - Mining method: open\_pit #### Resource Data - Category: inferred - Tonnes: 6100000 - Grade: 1.2 - Grade Unit: g/t - Cutoff Grade: 0.3 - Cutoff Unit: g/t gold #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-29T00:00:00.000Z Reasoning: Inferred resource component provides lower geological confidence. - Negative factor: Inferred category is speculative Evidence · text > 6.1 million inferred tonnes at 1.2 g/t gold #### 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 **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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ## 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.