Caledonia Files NI 43-101 Technical Reports on SEDAR+ Supporting August 28, 2026 Mineral Resource Announcements

Blanket Mine's updated mineral reserve estimate is expected before year-end 2026 following finalisation of its life-of-mine plan.

Rhea-AI Summary

Caledonia Mining (CMCL) has filed technical reports supporting its previously announced mineral resource estimates for Motapa and Blanket Mine on SEDAR+.

The NI 43-101 mineral disclosure reports make no material changes to the August 28, 2026 scientific or technical information. Caledonia expects finalisation of Blanket Mine's life-of-mine plan, currently in development, to result in an updated mineral reserve estimate before year-end 2026.

Positive

• Minor pointNI 43-101 technical reports filed support Motapa's maiden and Blanket Mine's updated mineral resource estimates.
• Minor point. Forward-looking: it has not happened yet and may not happen.Caledonia expects an updated Blanket Mine mineral reserve estimate before year-end 2026.

Negative

• Minor point. Forward-looking: it has not happened yet and may not happen.Blanket Mine reserve update depends on finalising the life-of-mine plan, still in development.

Key Figures

Updated reserve estimate timing: Before the end of this year

Updated reserve estimate timing

Before the end of this year

Expected after finalization of the Blanket Mine life-of-mine plan

Key Terms

ni 43-101, mineral reserve estimate

2 terms

ni 43-101 regulatory

"National Instrument 43-101 ("NI 43-101") technical reports"

A Canadian regulatory standard that sets the rules for how mining and exploration companies must report mineral resources and reserves, requiring technical reports prepared or signed off by an independent, certified expert. It matters to investors because it creates a consistent, transparent “inspection report” for mining projects, making it easier to compare prospects, judge the reliability of claims, and assess geological and financial risk before investing.

mineral reserve estimate technical

"an updated mineral reserve estimate before the end of this year"

A mineral reserve estimate is an expert calculation of how much economically recoverable mineral material exists at a site after accounting for costs, technology and legal permissions; think of it as the amount of usable, sellable product a mine is expected to produce. Investors care because it directly affects a project’s potential revenue, timeline and risk—larger, more certain reserves usually mean higher asset value and lower uncertainty about future cash flow.

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SAINT HELIER, JE / ACCESS Newswire / October 13, 2026 / Caledonia Mining Corporation Plc ("Caledonia" or the "Company") announces that, further to its announcements on August 28, 2026 regarding the maiden mineral resource estimates at Motapa and the updated mineral resource estimates for Blanket Mine, it has now filed the related National Instrument 43-101 ("NI 43-101") technical reports on SEDAR+.

The mineral resource reports are available for review under the Company's profile on SEDAR+ at https://www.sedarplus.ca. The filing of the mineral resource reports does not result in any material changes to the scientific or technical information contained in the August 28, 2026 announcements.

The life of mine plan for Blanket Mine is in development, the finalisation of which is expected to result in an updated mineral reserve estimate before the end of this year.

Enquiries

Caledonia Mining Corporation Plc Mark Learmonth Camilla Horsfall	Tel: +44 1534 679 800 Tel: +44 7817 841 793
Cavendish Capital Markets Limited (Nomad and Broker) Adrian Hadden Pearl Kellie	Tel: +44 207 397 1965
Camarco, Financial PR (UK) Elfie Harkell Fergus Young	Tel: +44 20 3757 4980
Curate Public Relations (Zimbabwe) Debra Tatenda	Tel: +263 77802131
IH Securities (Private) Limited (VFEX Sponsor - Zimbabwe) Lloyd Mlotshwa	Tel: +263 (242) 745 119/33/39

SOURCE: Caledonia Mining Corporation Plc

View the original press release on ACCESS Newswire

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Do Caledonia's filed technical reports change the Motapa and Blanket Mine resource announcements?

The filed reports make no material changes to the scientific or technical information announced on August 28, 2026. They support Motapa's maiden mineral resource estimates and Blanket Mine's updated mineral resource estimates.

When does Caledonia expect an updated mineral reserve estimate for Blanket Mine?

Caledonia expects an updated mineral reserve estimate before the end of 2026 following finalisation of Blanket Mine's life-of-mine plan. That plan is currently in development.