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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.

An employee was operating a CAT 390F excavator in the South Quarry Pit. The machine went into the water and sank to a depth of approximately 25 feet. Consistent with 103K order modifications approved by MSHA, the operator was recovered the following day.

Employee was assisting repair/replace toggle plate and toggle plate bearings on the jaw crusher when they suffered a pinning type injury.

A contract miner died when the compactor EE was operating overturned, pinning EE beneath the cab. As the compactor was traveling in reverse, the compactor's left tire went off a four-foot embankment causing the compactor to overturn.