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Drill helper was holding drill rod and casing sub below rod holder so driller could reposition drill head. Helper failed to release the rod/sub as quill rod was raised. Helper's hands were drawn into the rod holder causing lacerations/avulsions to both hands and broken index finger on left hand.

Miner was undergoing task training as an assistant to the diamond driller at the operation. While performing supervised operation during production, Miner's right hand was crushed between the drill rod and a drill casing adapter (sub), resulting in lacerations and broken bone(s).