EE, SHUTTLE CAR OPERATOR WAS LOADING SUPPLIES ONTO THE LEFT ROOF BOLTER THAT WAS SITTING IN THE #3 ENTRY. THE #1 SCOOP THE HE WAS UNLOADING SUPPLIES FROM WAS SITTING BETWEEN #3 AND #4 ENTRIES WITH THE SCOOP BUCKET ON THE MINE FLOOR. THE #2 SCOOP, OPERATED BY SECTION FOREMAN WAS CLEARING THE RIBS IN THE CROSSCUT AND BACKED INTO THE #1 SCOOP, BUCKET STRUCK EE IN RIGHT ANKLE.