2 EMPLOYEES WERE USING A SANDER-GRINDER ON METAL STRIP DOWN SIDE OF TRAILER TRUCK BED PREPAIRING TO REPAINT IT. SOME TIME DURING THE AFTERNOON OF THE 12TH INJURED GOT A PIECE OF METAL ON HIS EYE BALL. HE HAS HAD PINK EYE & HIS EYES WERE STILL SORE ADN HE DIDN'T REALIZE HE HAD ANYTHING IN HIS EYE UNTIL AROUND NOON ON 4/13. HE HAD ON HIS SAFETY GLASSES AND A FACE SHIELD.