FALL OF FACE/RIB/PILLAR/SIDE/HIGHWALL at Southern Illinois Stone Company
EE was preparing a shot on the bottom ledge when he heard a rock sliding. As he looked up he noticed a piece of stone sliding from a berm above him. While moving away from the face, the stone glanced off another berm below causing a rock to be projected out away from the face. The rock struck ee approximately three inches above the right knee.
U.S. Mine Safety and Health Administration