EMPLOYEE WAS WALKING IN THE ENTRY WHEN HE STRUCK HIS EAR AGAINST A DAMAGED BACON METAL STRAP HANGING DOWN FROM THE ROOF. CAUSE OF THE INJURY WAS AWARENESS. COMPLIANCE WITH REGS? RULES NOT A FA CTOR, PERSONNEL SAFETY ITEMS NOT A FACTOR, MINING EQUIP/ SYSTEMS NOT A FACTOR, MINER PROFICIENCY A FACTOR.