Caylloma: Resilience and Strategic Growth in Peru’s Polymetallic Heart

Executive Summary: A Powerhouse in Transition

The Caylloma mine, a flagship asset operated by Compañía Minera Bateas—a subsidiary of the globally recognized Fortuna Mining—continues to cement its position as a cornerstone of the Arequipa region’s mining economy. As of the third quarter of 2026, the operation has demonstrated remarkable operational agility, navigating the complexities of underground extraction to deliver a robust performance.

In the first nine months of 2026, the mine produced 28,913 gold-equivalent ounces. This figure places the operation firmly on the cusp of its annual guidance, which is set between 29,000 and 33,000 gold-equivalent ounces. With the year entering its final stretch, the management team at Bateas has expressed high confidence in the operation’s trajectory, signaling that current production rates are positioning the mine to not only meet but potentially exceed its annual production forecasts. This success is not merely a product of volume but a reflection of precise geological management and metallurgical optimization.

Chronology of 2026: A Year of Sustained Momentum

The year 2026 has been defined by a transition toward higher-grade silver extraction and a stabilization of polymetallic output.

Q1: Establishing the Baseline

The year began with a steady operational pace. During the first quarter, Caylloma processed 133,055 tonnes of mineral, yielding 257,603 ounces of silver. This period focused on setting the sequence for the remainder of the year, ensuring that underground development kept pace with extraction targets.

Q2: Strategic Sequencing

The second quarter saw a deliberate, planned reduction in silver output, which totaled 231,294 ounces—a 10% decrease from the previous quarter. This was not an operational failure but a reflection of the mine’s geological plan, which prioritized long-term structural stability and access to higher-grade zones scheduled for the latter half of the year. During this time, base metal production remained reliable, contributing 12 million pounds of zinc and 7.8 million pounds of lead.

Q3: The Q3 Surge

The third quarter of 2026 marked a significant turnaround. Production reached 9,897 gold-equivalent ounces, outpacing the 9,705 ounces produced in the previous quarter. The primary driver of this growth was the silver segment, which saw a 7% production increase to 247,367 ounces. This surge was underpinned by two critical technical improvements:

  • Grade Enhancement: The average head grade for silver climbed from 62 grams per tonne to 66 grams per tonne.
  • Metallurgical Efficiency: Recovery rates saw a notable improvement, rising from 82.26% to 83.26%, demonstrating the efficacy of recent upgrades in the processing plant.

Supporting Data: Operational Breakdown and Methodology

Fortuna Mining’s reporting methodology provides a transparent view of Caylloma’s polymetallic complexity. The operation’s reliance on a dual-mining approach—75% via vertical cut-and-fill and 25% via sub-level stoping—allows for the delicate balancing of ore grades against the physical constraints of the underground environment.

Production Highlights (YTD 2026)

  • Total Gold-Equivalent: 28,913 ounces.
  • Base Metal Output: 11.4 million pounds of zinc and 8.4 million pounds of lead in Q3 alone.
  • Throughput: 140,832 tonnes processed in Q3, maintaining stability despite the inherent risks of underground mining.

Reserves and Resource Dynamics

The reserve landscape at Caylloma is currently undergoing a period of re-evaluation. Proven and probable mineral reserves have adjusted from 2.44 million to 2.28 million tonnes. This reduction is primarily attributed to natural depletion, with 556,000 tonnes extracted during the period. However, this has been partially offset by successful exploration efforts that have added new tonnage to the inventory.

Interestingly, while the reserves have seen a minor contraction in volume, the qualitative aspect of the resources shows promise. The inferred mineral resources grew by 3%, reaching 3.90 million tonnes, with silver grades increasing by 9%. This suggests that while the mine is maturing, the geological understanding of the deposit is becoming more refined, allowing for more precise targeting of mineralized zones.

Strategic Initiatives: Exploration and Modernization

To combat the natural depletion of reserves, Fortuna Mining has allocated a $3.8 million "brownfields" exploration budget for 2026. This capital is being funneled into 12,000 meters of diamond drilling, with a specific focus on the Animas zone. By extending the known mineralized veins (specifically 3 and 4), the company aims to extend the life of the mine significantly beyond its current authorized operational horizon of 2028.

Infrastructure Upgrades

Modernization is the second pillar of the current strategy. A $26.38 million investment plan is currently being executed to overhaul plant facilities and improve underground infrastructure. Key highlights include:

  • Tailings Management: The expansion of Tailings Storage Facility (TSF) No. 3 is a critical project, with a 64% completion rate as of September 30, 2026. This facility is essential for maintaining the operational sustainability of the site for years to come.
  • Energy Efficiency: A major milestone was reached in December 2025 with the full integration of the mine into Peru’s national electricity grid. This has allowed Caylloma to move away from internal, more costly power generation, securing 100% of its energy needs from the national system. This transition has not only improved the bottom line but has also lowered the mine’s overall carbon footprint.

Implications for Stakeholders

The importance of the Caylloma mine extends far beyond the production of metals; it is a vital economic engine for the Arequipa region.

Socio-Economic Impact

The operation’s commitment to the local community is codified through both employment and direct investment. In 2025 alone, the mine supported 925 jobs. Furthermore, in a landmark move for local development, Minera Bateas initiated a significant capital injection into the Caylloma Social Fund. In June 2026, the company made an initial deposit of S/3.5 million, part of a larger S/14 million agreement aimed at financing regional development initiatives.

Future Outlook

As the company looks toward the final months of 2026, the focus is on maintaining the momentum gained in the third quarter. The challenges of the past—namely the lower grades observed in 2025—appear to be behind the company. With a solid infrastructure foundation, an active exploration pipeline, and a strong social license to operate, Caylloma is well-positioned to maintain its status as a premier polymetallic operation.

The "five centuries of history" surrounding the mining district of Caylloma serve as a backdrop to a modern, high-tech operation that has proven its resilience. By successfully navigating the technical hurdles of grade fluctuations and resource depletion, Bateas is demonstrating that mature mines, when managed with technical discipline and strategic foresight, can continue to deliver substantial value to shareholders and the local community alike.

Official Perspective

While the company remains cautious, the data indicates a clear trend: the operational efficiency gains in the third quarter are not an anomaly but the result of sustained investment in both the plant and the geological team. By adhering to its guidance and simultaneously investing in long-term expansion, Fortuna Mining is ensuring that Caylloma remains a vital player in the Peruvian mining sector for the foreseeable future. The upcoming completion of the tailings facility and the continued success of the diamond drilling program will be the key indicators to watch as the industry approaches the 2027 fiscal year.