HE WAS IN BASEMENT OF THE COLORING DEPT. DOING ASYSTEM CLEAN UP. DEBRIS HAD BUILT UP IN THE BASEMENT AND HAD BECOME WET. HE WAS WALKING THROUGH DEBRIS AND GOT STUCK. HE FORCEFULLY PULLED HIS RIGHT LEG UP AGAINST THE SUCTION AND FELT A PULLSUSTAINED STRAIN OF MUSCLES ABOUT RIGHT KNEE ANDTHIGH.