INJURED WAS PUTTING HYDRAULIC OIL IN ROOF BOLTER. WHEN THE OIL CAN WAS EMPTY HE PULLED THE FILL HOSE OUT OF CAN, GRABBED THE OIL CAN WITH HIS RIGHT HAND AND THREW IT TO THE RIB. A SHARP EDGE ON THE CAN CAUGHT HIS GLOVED FINGER AND SHAVED THE SKIN FROM IT. IT WAS THE MIDDLE FINGER ON HIS RIGHT HAND.