A slicken-sided piece of rock 78"" long by 20"" wide by 0-11"" thick fell from the mine roof in the #2 entry of the E-mains 001 working section. This rock struck employee on the left hand causing a compound fracture to the employee's fifth finger (little). The area was bolted according to the roof control plan with 6' fully grouted resin bolts and oversized bearing plates.