GBR: Appointment of Chief Mining Engineer

Original announcement by asx on

Company
Great Boulder Resources
Ticker
GBR
Exchange
ASX
Region
Western Australia
Primary commodity
Gold
Secondary commodities
None reported
Document categories
Resource update, Other
Extracted
2026-09-29 23:35:49 UTC

Analysis by Minestarters Atlas

Atlas analysis published:

Minestarters Atlas analysis

Summary

Great Boulder Resources has appointed Rod Bonner as Chief Mining Engineer to lead the development strategy for its Peak Hill and Side Well gold projects in Western Australia. Mr. Bonner, with over 25 years of experience, will drive the company's transition from explorer to gold producer, aiming for production at Peak Hill by late 2027 and Side Well in 2028. The company highlights existing resource estimates of 481,000oz at Peak Hill and 1.01Moz at Side Well, and anticipates publishing significant resource updates in the coming months.

Reasoning: The appointment of a highly experienced Chief Mining Engineer signals a strong commitment to advancing the Peak Hill and Side Well gold projects towards production, supported by existing resource estimates and an ore purchase agreement. While the resource figures are historical, the strategic direction and new hire are significant.

Positive factors

  • Experienced Chief Mining Engineer appointed
  • Clear pathway to production outlined
  • Existing ore purchase agreement with Westgold Resources
  • Transition from explorer to producer

Negative factors

  • Resource figures are historical restatements

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 0

Classification and evidence

QP/CP Signedpositive

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: Mr Andrew Paterson is a Member of the Australasian Institute of Geoscientists (AIG) and qualifies as a ‘Competent Person’ as defined in the JORC Code for the resource information.

Evidence · text

“Mr Andrew Paterson who is a Member of the Australasian Institute of Geoscientists (AIG). Mr Paterson has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a ‘Competent Person’ as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ (JORC Code).”

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: The resource information refers to JORC disclosures and compliance.

Evidence · text

“‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ (JORC Code).”

Historical Estimate Onlynegative

Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling.

Why it applies: The mineral resource inventory presented in the table is explicitly stated as previously reported in prior ASX announcements.

Evidence · text

“The information in this announcement that relates to Mineral Resources at the Company’s Side Well Gold Project was previously reported by the Company in its announcement to the ASX on 18 December 2025”

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: The combined mineral resource inventory includes a significant portion of Inferred resources (10,855,000 tonnes for 500,000 ounces).

Evidence · table

“10,855,000”

Context: Inferred

PFS-Supportingneutral

Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.

Why it applies: The company plans for pre-feasibility studies to commence in early 2028.

Evidence · text

“pre-feasibility studies commencing in early 2028.”

Experienced Managementpositive · Story-specific tag

No canonical definition is currently available.

Why it applies: The appointment of Rod Bonner as Chief Mining Engineer brings over 25 years of experience, complementing the experienced board.

Evidence · text

“Mr Bonner is a highly experienced Mining Engineer with more than 25 years’ experience in Australia, Africa and the UK”

Pathway to Productionpositive · Story-specific tag

No canonical definition is currently available.

Why it applies: The announcement outlines a clear strategy and timeline for bringing the Peak Hill and Side Well projects into production by 2027 and 2028 respectively.

Evidence · text

“Rod Bonner will lead the development strategy at the Peak Hill gold project in WA, where Great Boulder has an ore purchase agreement with Westgold”

Strategic Agreementpositive · Story-specific tag

No canonical definition is currently available.

Why it applies: The company has an existing ore purchase agreement with Westgold Resources for Peak Hill and a collaboration agreement for Side Well.

Evidence · text

“ore purchase agreement with Great Boulder’s largest shareholder Westgold Resources (ASX: WGX)”

Extracted facts

Stored fact records: 0. Some facts used in scoring do not have a stored record.

No stored fact records are available for this extraction.

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.