EE GRABBED A LIFTING JACK OFF THE LOCOMOTIVE AND WHEN HE SET IT VERTICAL, THE RATCHETING PART OF THE JACK COLLAPSED, THUS PINCHING HIS TWO FINGERS. CAUSE OF THIS INJURY WAS CONCENTRATION. RULES/REGS WERE NOT A FACTOR, MINER PROFICIENCY A FACTOR, SAFETY EQUIPMENT WAS NOT BEING WORN (GLOVES), MINING EQUIPMENT/SYSTEMS WERE NOT A FACTOR.