1 RIGHT-5SOUTH FEEDER PULLED TAILPIECE & BELT UP FOR BELT MOVE JACKS THAT ATTACH TO TAILPIECE WERE SET SECURELY AGAINST TOP. FEEDER TRAMMED TO GET SLACK IN CHAINS BETWEEN FEEDER & TAILPIECE. M EN OBSERVING IF BELT RUNNING THROUGH TAILPIECE PROPERLY. BOLTS THAT HOLD JACK ON TAILPIECE BROKE-TAILPIECE WENT SIDEWAYS, CHAIN TIGHTENED ON ONE END AND HIT VICTIM'S RIGHT LEG.