Maintenance Man fatality at Kennecott Keystone Underground (Kennecott Utah Copper LLC), UT, March 12, 2026

at 5:12 AM

On March 12, 2026, a maintenance man was fatally injured in a machinery accident at Kennecott Keystone Underground (Kennecott Utah Copper LLC), UT.

Kennecott Keystone Underground · Underground · Metal/Non-Metal

Operator: Kennecott Utah Copper LLC (Rio Tinto Group)

Contractor on site: R83

Salt Lake County, UT

Classification MACHINERY

Type Struck by powered moving object

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Investigator narrative

At approximately 05.12am on the 12th March 2026, a mechanic was struck by a drill boom in a surface workshop, causing fatal injuries.

Record details

Activity at time of incident: Machine Maintenance
Subunit / location: SURFACE AT UNDERGROUND
Accident type: Struck by powered moving object
Source of injury: SURFACE MINING MACHINES
Nature of injury: MULTIPLE INJURIES
Body part affected: TRUNK, MULTIPLE PARTS
Total mining experience: 5 years
Experience at this mine: 0 years
Experience in this job: 0 years
Degree of injury: FATALITY

Related fatalities

Same operator

October 29, 2008 · Haul/Off Road/Coal/Ore/Pit/Quarry/Rock/Rubber Tire Truck Driver · Rio Tinto Kennecott Copper, UT
January 12, 1990 · Shopman Repair Cars · Kennecott Utah Copper LLC, UT

Same classification

July 1, 2026 · Electrician · Warrior Met Coal BC, LLC, AL
May 20, 2026 · Maintenance Man · Pine Branch Mining LLC, KY
March 5, 2026 · Continuous Miner Operator · Patton Mining LLC, IL
January 6, 2026 · Maintenance Man · National Cement Company Of California Inc, CA
December 10, 2025 · Crane Operator · MID Coast Aggregates LLC, FL

Same year

October 8, 2026 · Bull Gang Foreman · Panther Creek Mining LLC, WV
October 5, 2026 · Haul/Off Road/Coal/Ore/Pit/Quarry/Rock/Rubber Tire Truck Driver · Cyber Square, LLC, LA
September 23, 2026 · Front-End Loader · Zack Burkett Co., TX
September 3, 2026 · Welder (Non-Shop) · KG Mining (Bald Mountain) Inc., NV
September 3, 2026 · Prep Plant Foreman · KG Mining (Bald Mountain) Inc., NV

Verify on MSHA

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MSHA fatality report: MSHA's report page for this fatality
Accident record: Download MSHA Accidents.zip then search for Document number 220260820024 (the unique key per MSHA Form 7000-1)
Mine record: MSHA Mine Data Retrieval System and search by Mine ID 4201392
All MSHA datasets: Open Government Data program directory covering Accident, Mines, Inspections, Violations, etc.

Source: US Mine Safety and Health Administration (MSHA) · Document 220260820024 · Mine ID 4201392 Trainer view →