EE & COWORKER WERE USING THE SCOOP TO RECOVER MATERIAL. COWORKER WAS OPERATING THE SCOOP & NEEDED TO STOP AT AN AIR LOCK DOOR. NO COMMUNICATION WAS MADE BETWEEN WORKERS & THE OPERATOR ASSUMED EE WAS IN THE CLEAR. WHEN THE OPERATOR REPOSITIONED THE SCOOP, THE EE'S RIGHT LOWER LEG WAS CAUGHT IN THE R. SWING JACK AREA OF THE MACHINE. X-RAY NEG., 10"" LAC. TO CALF MUSCLE.