Mining Incidents
Fatality · MSHA Record #220231950009

Bulldozer Operator

June 22, 2023 at 2:30 PM
Chula Vista Quarry · Surface · Metal/Non-Metal
Contractor on site: Z740
San Diego County, CA
Classification MACHINERY
Type Struck against a moving object
Investigator narrative
Machine operator was operating a CAT D9T dozer clearing overburden material from a bench. Operator reversed the machine backwards an estimated 200-300 ft. at a high speed without looking back and without responding to honking from another machine, per witness testimony. Machine fell off an edge. Operator was pronounced dead at the scene. Machine is total loss.
Final MSHA investigation
On June 22, 2023, at 2:31 p.m., John Hatfield, a 60 year-old contractor bulldozer operator with 27 years of mining experience, died after the bulldozer he was operating backed over the edge of a highwall, and fell approximately 44 feet onto a pile of rocks on the pit floor.The accident occurred because the contractor did not ensure the bulldozer operator wore a seat belt while operating the bulldozer.

Read the full report (PDF)

Findings from MSHA's final investigation report, which supersedes the preliminary narrative above.

Record details
Activity at time of incident
Bulldozer
Subunit / location
STRIP, QUARY, OPEN PIT
Accident type
Struck against a moving object
Source of injury
SURFACE MINING MACHINES
Nature of injury
UNCLASSIFIED,NOT DETERMED
Body part affected
MULTIPLE PARTS (MORE THAN ONE MAJOR)
Total mining experience
27 years
Experience at this mine
2 years
Experience in this job
27 years
Degree of injury
FATALITY
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Source: US Mine Safety and Health Administration (MSHA) · Document 220231950009 · Mine ID 0404080 Trainer view →