On 05/03/07, EE was cutting coal on MMU 003 in the #8 left entry. While cutting coal, a rock fell from the roof between the rib & the first roof bolt. The rock was approx. 3' wide x 7' long x 2"" to 3"" thick. It hit him on the head & shoulders & rode him to the ground. The fall of rock caused a compressed disc & fracture to the lower back.