• Blanket Mine must produce about 19,800 to 23,300 ounces in Q4 to meet Caledonia’s revised 2026 guidance, requiring a sequential production increase of roughly 16% to 37% from Q3
• The operational weakness is concentrated underground: delayed compressor deployment restricted access to deeper high-grade mining areas while Q3 tonnes milled actually increased 1.4%
• Lower expected ounces have pushed on-mine cost guidance to US$1,700 to US$1,900 per ounce and AISC to US$2,650 to US$2,850, tightening the cash-generation equation as Caledonia funds Bilboes

Harare- Caledonia Mining’s Blanket Mine now needs its strongest quarter of 2026 to recover from a deep-level mining bottleneck that cut access to higher-grade ore, reduced gold production and forced management to lower full-year guidance while raising unit-cost expectations.

Blanket produced 17,030 ounces in the third quarter, down 10.9% from 19,106 ounces a year earlier. Nine-month production fell 16.5% to 49,158 ounces from 58,846 ounces. Caledonia consequently reduced its 2026 production guidance to 69,000 to 72,500 ounces from 72,000 to 76,500 ounces. Pasted markdown

The more consequential feature of the quarter sits below the production headline. Blanket milled 215,539 tonnes in Q3, 1.4% more than a year earlier, yet the grade delivered to the plant fell from 3.00 grammes per tonne to 2.67 grammes per tonne. Recovery also eased from 93.3% to 92.2%.

Across the first nine months, tonnes milled increased 1.1% to 625,904 tonnes while grade fell from 3.16 grammes per tonne to 2.65 grammes per tonne, a decline of about 16%. Gold output fell at almost the same rate.

That puts the operating pressure on mine access and grade delivery rather than processing volume. Mining increasingly shifted during September towards Levels 30 and 34, approximately 990 metres and 1,110 metres below surface, where Blanket expected access to higher-grade and higher-volume mining areas. Four additional compressors had been procured to support those deeper workings and increased underground development, but deployment delays restricted compressed-air availability in the areas Caledonia needed most. Pasted markdown

Two compressors have since been deployed, while the remaining two had cleared port and were being transported to the mine when Caledonia issued the update. Q4 therefore becomes an execution test around whether that additional compressed-air capacity restores higher-grade mining quickly enough.

At the bottom of revised guidance, Blanket needs approximately 19,800 ounces in the final quarter, about 16% above Q3 production. Hitting the top end requires roughly 23,300 ounces, almost 37% above Q3.

Part of that hurdle will come from gold already within the processing system. Caledonia says difficulties commissioning new gravity-circuit equipment left approximately 1,100 ounces of free gold retained in the metallurgical plant. Recovery is expected to begin from mid-October once additional elution capacity is commissioned.

The mine also has 58.04 tonnes of accumulated activated carbon containing approximately 1,166 ounces of gold at an average grade of 625 grammes per tonne scheduled for processing. Together, those identified inventories could provide a meaningful contribution to Q4 production, although the operating recovery still requires stronger underground grade delivery and improved mining flexibility. Pasted markdown

The Lima satellite plant provides another source of additional throughput, with more ore expected from the seven-day shift system. The financial consequence of the production miss is already visible in guidance.

The company raised expected on-mine costs to US$1,700 to US$1,900 per ounce from US$1,600 to US$1,800, while AISC guidance increased to US$2,650 to US$2,850 from US$2,500 to US$2,700. Blanket carries a substantial underground infrastructure, labour, power and sustaining-capital base. Fewer ounces spread those costs across a smaller production denominator, raising the cost attached to every ounce sold.

That becomes particularly relevant while Blanket is expected to remain the cash-generating foundation of Caledonia’s wider Zimbabwe growth programme. The company is simultaneously advancing Bilboes, its next major gold development project. Group capital expenditure guidance has now been reduced from US$103.3 million to US$94.3 million.

Blanket sustaining capital falls from US$48 million to US$44 million, while Bilboes growth capital moves from US$48 million to US$43 million. Blanket growth capital remains US$3.5 million and Motapa exploration remains US$3.8 million.

The company  attributed the US$9 million reduction mainly to expenditure timing, including components of the 132kV power-line project moving into 2027, rather than a reduction in project scope. Caledonia also maintains that the adjustment will not impair its ability to use internally generated cash to contribute towards Bilboes development. Pasted markdown

That places greater importance on Blanket’s 2027 operating recovery. The mine has historically carried Caledonia’s production base while the group builds towards a larger multi-asset structure. A persistent grade-access problem would raise operating costs at the same time that capital requirements increase elsewhere in the portfolio.

The current constraint appears technically identifiable. Compressor capacity is being installed, plant gold is scheduled for recovery, additional elution capacity is being commissioned and mining is moving into deeper high-grade areas.

The Q4 production range now provides the immediate benchmark. Production around 20,000 ounces would put Blanket near the lower end of revised annual guidance. Output approaching 23,000 ounces would demonstrate that compressor deployment, improved grade access and recovery of plant-held gold are restoring the mine towards its intended production profile.

A materially weaker quarter would push the issue beyond delayed equipment and into the mine’s ability to consistently convert its deeper resource base into payable ounces at acceptable unit costs.

For Caledonia, that distinction becomes increasingly important as Blanket moves from being the group’s principal growth project to becoming the cash engine expected to help finance the next one.

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