West Wits Withholds Project 200 Study as 74% Inferred Resources Block ASX Release
Key Takeaways
- West Wits Mining completed its Project 200 Scoping Study but will not release it publicly, as the 74% aggregate inferred resource proportion across a 35-year life-of-mine model does not meet ASX requirements for production targets and derived financial information.
- The Company confirmed the Study met its internal objectives and supported the decision to progress Project 200 to pre-feasibility stage — the development pathway remains intact.
- The Witwatersrand Basin Project holds a total resource of 7.24Moz gold at 4.0g/t, with 3.23Moz sitting in the inferred category — the conversion of this material to indicated or measured is now the key workstream unlocking future public disclosure.
- Qala Shallows, incorporated in the Scoping Study, is currently in development and represents the Company's near-term operational focus within the broader project.
- Future market disclosures — including any release of production targets or financial modelling — are contingent on the pace of additional drilling, sampling, and geological analysis to upgrade resource confidence categories.
West Wits Mining has advised it will not release its Project 200 Scoping Study following consultation with the ASX. The Company views the Study results as positive and as having met its internal objectives — predominantly to enable a decision on progressing Project 200 into the pre-feasibility stage. The decision to withhold centres on disclosure compliance: the Study relied on an aggregate 74% inferred mineral resources across a 35-year life-of-mine model, with certain years exceeding 90% inferred proportion. This does not meet ASX requirements for production targets and derived financial information. West Wits intends to continue progressing Project 200 and the broader Witwatersrand Basin Project to the next level of studies, focusing on converting inferred resources into higher-confidence categories.
Why the Scoping Study is being withheld — the inferred resource issue explained
ASX requirements restrict the use of inferred mineral resources in production targets and derived financial modelling. Inferred resources represent the lowest confidence level in the JORC classification hierarchy, based on limited geological sampling and geological inference. When a study incorporates a high proportion of inferred material — in this case, 74% aggregate across the full life-of-mine, with some years exceeding 90% — the derived production schedule and economic forecasts carry material uncertainty. The ASX requires a higher proportion of measured and indicated resources before a company can publicly release production targets and financial outcomes based on those targets.
West Wits set out to achieve a specific internal objective: determining whether Project 200 warranted progression to pre-feasibility stage. The Scoping Study met that threshold. Meeting internal objectives, however, does not equate to meeting ASX public disclosure thresholds. The Company stated it “would not meet ASX requirements given the proportion of inferred resources used in the production target and the financial information derived from same.” This is disclosure discipline, not a negative Study outcome.
Company Position
The Company views the results of the Scoping Study as positive and as meeting its internal objectives.
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What inferred mineral resources mean for investors
The JORC Code classifies mineral resources into three confidence levels based on the quality and quantity of geological data supporting the estimate. Each category reflects the degree of certainty that the mineralisation exists as modelled.
- Measured Resources: Highest confidence. Based on detailed sampling and data sufficient to confirm geological continuity. Used in reserve estimates and final feasibility studies.
- Indicated Resources: Moderate confidence. Based on adequate sampling to assume geological continuity, but with less detail than measured. Can support pre-feasibility studies.
- Inferred Resources: Lowest confidence. Based on limited sampling, geological inference, and assumed continuity. High proportions of inferred resources in production targets and derived financial information may not meet ASX public disclosure requirements.
West Wits’ current mineral resource estimate for the Witwatersrand Basin Project, released 2 February 2026, comprises:
- Measured: 14.08Mt at 4.40g/t for 1.99Moz
- Indicated: 15.55Mt at 4.04g/t for 2.02Moz
- Inferred: 26.81Mt at 3.75g/t for 3.23Moz
The 3.23Moz inferred component illustrates why resource conversion is central to progressing the Project. Until a larger proportion of the resource base is reclassified as indicated or measured, the Company cannot publicly release production targets or financial modelling that rely on that tonnage. This is why a study that is internally useful for decision-making may not satisfy public disclosure rules, and why converting resources to higher-confidence categories is the logical next step.
The path forward — resource conversion and next-stage studies
West Wits intends to progress Project 200 and the broader Witwatersrand Basin Project through to the next level of studies. The key work stream centres on converting more inferred mineral resources into indicated and measured categories through additional drilling, sampling, and geological analysis. The Company stated it will “seek to complete additional work, including to convert more inferred mineral resources into higher confidence categories of mineral resources, with a view of providing further disclosures and updates to the market as appropriate in future (including in respect of the broader Project).”
The Scoping Study incorporated Qala Shallows, which is currently in development and represents the near-term focus for the Company. Project 200 remains on a development pathway, with the decision to progress to pre-feasibility stage intact. The timeline and scope of future disclosures will depend on the pace of resource conversion work.
| Item | Detail | Status | Investor Relevance |
|---|---|---|---|
| Scoping Study | 35-year LOM model | Completed, not released | Met internal objectives |
| Project 200 | Pre-feasibility decision | Progressing to next studies | Development pathway intact |
| Resource conversion | Inferred → Indicated/Measured | Planned additional work | Key to future disclosure |
| Qala Shallows | Incorporated in Study | In development | Near-term focus |
Project context — the Witwatersrand Basin backdrop
The Witwatersrand Basin Project sits in the Central Rand Goldfield of South Africa. The Company’s current resource estimate stands at 7.24Moz gold at 4.0g/t. The Witwatersrand Basin is a largely underground geological formation which surfaces in the Witwatersrand region. It holds the world’s largest known gold reserves and has produced over 1.5 billion ounces (over 40,000 metric tons) historically, representing approximately 22% of all gold accounted for above the surface. This production figure reflects the regional endowment of the basin, not West Wits’ own operational history. Qala Shallows, currently in development, forms part of the broader tenure position the Company holds within this established gold province.
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Measured progress with disclosure discipline
The decision to withhold the Scoping Study reflects disclosure discipline, not a negative Study outcome. The Company has confirmed the results met its internal objectives and supported the decision to progress Project 200 to the next stage. The Project’s development pathway remains intact. Resource conversion work will determine the scope and timing of future public disclosures. The announcement was approved for release by the Company’s Chairman.
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