Published: April 21, 2026 |

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Aris Mining said it has made a significant construction milestone at its Marmato Gold Mine with the underground development cross-cut now connecting the new surface decline to the existing underground development. The mine is located in Caldas, Colombia.

This breakthrough marks an important step in the Marmato expansion project, establishing continuous underground access from surface, where the new 5,000 tonne per day CIP plant is under construction, to the existing workings. The connection supports the next phases of mine development, infrastructure installation and operational readiness for the Marmato bulk mine which is on schedule for first gold in Q4 2026.

“The on-schedule connection of the new surface decline to the existing underground development is a major milestone for Marmato and an important step in delivering our expansion plans. As development continues to advance, Marmato, together with Segovia, remains on track to deliver approximately 500,000 ounces of gold production per year following expansion and ramp-up,” said Neil Woodyer, chair and CEO.

Marmato is one of Aris Mining’s key growth projects and is expected to become a larger-scale, modern underground mining operation. This cross-cut breakthrough reflects continued progress in developing the access and infrastructure required to support expanded operations.

Aris Mining is a Canadian gold mining company focused on South America. The company operates the Segovia and Marmato underground gold mines in Colombia, which together produced approximately 257,000 ounces of gold in 2025. The company is advancing expansion projects at Segovia and Marmato.

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