A ROOF FALL OCCURRED DURING MINING IN THE 5-LEFT WORKING SECTION WHILE CONNECTING THE XCUT BETWEEN NO. 7 AND NO. 8 ENTRIES. THE ROOF FALL RODE BACK THROUGHT THE INSTALLED ROOF BOLTS, STRIKING THE REMOTE CONTROLLED CONTINUOUS MINER OPERATOR AND MINER HELPER. THE MINER OPERATOR SUSTAINED SERIOUS PERSONAL INJURIES WHILE THE MINER HELPER SUSTAINED FATAL INJURIES.