EE WAS OPERATING THE UNIT 1 CONTINUOS MINER. WHILE CUTTING COAL IN THE NO. 2 ENTRY A PIECE OF ROOF ROCK FELL FROM BETWEEN THE ROOF BOLTS, STRIKING THE BACK OF HIS NECK. THE INCIDENT CAUSED A L ACERATION THAT REQUIRED SUTURES. THE INJURED EE IS WORKING WITH SUTURES AND DID NOT MISS TIME AWAY FROM WORK.