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Mariana Minerals Opens First Autonomous Mine, Targets 50k Tons Copper

4/28/2026

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Summary

Story summary

Mariana Minerals reopened the Copper One mine in San Juan County, Utah on April 27, 2026, launching the first fully autonomous mining operation.
CEO Turner Caldwell said autonomous drills, robotic haul trucks and Spot robots cut mining costs 40%-50%, refining costs ~30%, and reduced water and chemical use.
The company targets 50,000 tons of refined copper annually by 2030, has raised $100 million, and will expand staff from 80 to over 300.

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Story summary

Mariana Minerals reopened the Copper One mine in San Juan County, Utah on April 27, 2026, launching the first fully autonomous mining operation.
CEO Turner Caldwell said autonomous drills, robotic haul trucks and Spot robots cut mining costs 40%-50%, refining costs ~30%, and reduced water and chemical use.
The company targets 50,000 tons of refined copper annually by 2030, has raised $100 million, and will expand staff from 80 to over 300.