# Vault Announces Acquisition of U.S. Historical Mirage-Mariposa Tungsten Mine within the Gray Eagle Project Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/vault-announces-acquisition-of-u-s-historical-mirage-mariposa-tungsten-mine-with--65e06f21-77ce-4367-b24f-7659f705796b Original source: https://money.tmx.com/en/quote/KNOX/news/5001903005267516/vault-announces-acquisition-of-u-s-historical-mirage-mariposa-tungsten-mine-with Publisher: tmx Original announcement: 2026-05-11T07:05:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Vault Strategic Mining Corp. - Ticker: KNOX - Exchange: TSX - Region: California - Primary commodity: Tungsten - Secondary commodities: Silver - Document categories: Resource update, Agreement transaction - Extracted: 2026-09-16 06:46:25 UTC Narrative sentiment: 0.40 · Bullish ## Minestarters Atlas summary Vault Strategic Mining Corp. has entered into a definitive agreement to acquire 100% of the historical Mirage-Mariposa Tungsten Mine in California for US$380,000 and a 2.0% NSR royalty. The acquisition includes historical resource estimates of approximately 21,000 indicated and 34,400 inferred tonnes at 0.15% tungsten trioxide, though these figures are non-compliant with modern NI 43-101 standards. Reasoning: The company is acquiring a historical tungsten-silver asset at a low cost, but the resource relies on non-compliant historical data that requires modern verification. - Positive factor: Acquisition of a historical past-producing mine - Positive factor: Combination of tungsten and precious metals in a skarn environment - Positive factor: Low acquisition cost \(US$380,000 total cash\) - Negative factor: Historical resource data is non-NI 43-101 compliant - Negative factor: No modern drilling has been performed to confirm historical grades - Negative factor: Resource is largely subeconomic or inferred Facts used in scoring: 2 ## Classification and evidence **Historical Estimate Only** Polarity: negative Definition: Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling. Why it applies: The resource estimates provided are based on USGS MRDS records and are explicitly stated as non-NI 43-101 compliant. Evidence · text > historical resource estimates should not be relied upon as current mineral resources or reserves **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The announcement mentions 34,400 inferred tons as part of the historical resource. Evidence · text > 34,400 inferred tons ## Extracted facts Stored fact records: 2. Some facts used in scoring do not have a stored record. ## Resource Estimates (2) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/vault-announces-acquisition-of-u-s-historical-mirage-mariposa-tungsten-mine-with--65e06f21-77ce-4367-b24f-7659f705796b#fact-resource-facts-0) Gray Eagle Project · tungsten Historical result Needs review: historical\_restatement #### Identity - Project: Gray Eagle Project - Commodity: tungsten - Region: california - Reported Region: California - Ticker: KNOX #### Resource scope - Estimate type: resource - Resource group id: resource:a685743b16ad8b6e96c9 - Deposit or zone: Mirage-Mariposa #### Resource Data - Category: indicated - Tonnes: 21000 - Grade: 0.15 - Grade Unit: % #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-05-11T00:00:00.000Z Reasoning: Historical indicated resource reported via USGS MRDS; requires modern verification. - Negative factor: Non-compliant historical data Evidence · text > historical resources of approximately 21,000 indicated tons... with an average grade of 0.15% tungsten trioxide #### 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 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 **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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/vault-announces-acquisition-of-u-s-historical-mirage-mariposa-tungsten-mine-with--65e06f21-77ce-4367-b24f-7659f705796b#fact-resource-facts-1) Gray Eagle Project · tungsten Historical result Needs review: historical\_restatement #### Identity - Project: Gray Eagle Project - Commodity: tungsten - Region: california - Reported Region: California - Ticker: KNOX #### Resource scope - Estimate type: resource - Resource group id: resource:944d32cff26bb5e94382 - Deposit or zone: Mirage-Mariposa #### Resource Data - Category: inferred - Tonnes: 34400 - Grade: 0.15 - Grade Unit: % #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-05-11T00:00:00.000Z Reasoning: Historical inferred resource reported via USGS MRDS; requires modern verification. - Negative factor: Non-compliant historical data Evidence · text > 34,400 inferred tons, with an average grade of 0.15% tungsten trioxide #### 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 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 **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.