8E SECTION. #2 ENTRY. 2 ROOF BOLTERS AND MINER OPERATOR WERE ADVANCING THE VENTILATION TUBING. EE WAS STANDING NEAR THE REAR BUMPER OF THE MINER AND READY TO INSERT THE SLIDES. WHENA SECIT ON OF RIB BROK OUT AND FELL. STRUCK HIS CHEST AND PUSHED HIM BACK AGAINST HE CONTINUOUS MINER.