EE WAS WALKING FROM THE 28 EAST BELT DRIVE TO THE 28 EAST TRACK. HE HIT HIS HARD HAT ON A LOW ROOF BOLT BLOCK IN THE TOP. EE WAS KNOCKED DOWN TOTHE MINE FLOOR. HE JAMMED HIS NECK. EE HIT HEAD DUE TO LOW TOP THROUGH THE AREA, THAT HE DIDN'T NOTICE. THERE WAS NO DAMAGE OR IMPAIRMENT TO THEMINING OPERATION OR EQUIPMENT. THE INJURY DIDN'TINVOLVE ANY ASPECT OF COMPLIANCE WITH RULES/REGS