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March 12, 2026 Fatality

Accident Classification: Machinery
Location: Kennecott Keystone Underground - Salt Lake, Utah
Mine Controller: Rio Tinto Group
Mine Type: Underground
Mined Material: Copper Ore NEC
Incident Date/Time: March 12, 2026 05:16 am
PRELIMINARY REPORT

A contractor died on the surface of an underground mine after the boom of a drill mast collapsed and struck him.

The information provided in this notice is based on preliminary data ONLY and does not represent final determination regarding the nature of the incident or conclusions regarding the cause of the accident.