EE WAS ATTEMPTING TO INSTALL A BOTTOM ROLLER IN ITS BRACKET. HE TOOK HIS GLOVE OFF TO FILL THE SLOT FOR THE ROLLER WHEN THE ROLLER FELL INTO PLACE. CAUSE OF THIS INJURY WAS AWARENESS AND NOT WEARING PROPER PROTECTIVE MATERIAL. COMPLIANCE WITH RULES/REGS WAS A FACTOR, MINER PROFICIENCY A FACTOR MINING EQUIPMENT SYSTEMS NOT A FACTOR.