EE STATED WHILE REMOVING AND TEARING DOWN A BLOCK STOPPING HE HAD KNOCKED OUT 3 COURSES OF BLOCK BETWEEN THE RIB AND A 6 FEET WALK THROUGH DOOR AND 2 BLOCKS REMAINED STUCK IN THE RIGHT HAND CORNER. WITH HIS RIGHT HAND ON TOP OF THE BLOCK WALL, HE ATTEMPTED TO REMOVE A WEDGE STUCK ON THE RIB. THIS CAUSED ONE OF THE BLOCKS TO FALL, STRIKING HIS HAND.