INJURED EE DID NOT REPORT INJUGY TO HIS SUPERVISOR ON THE DAY OR TIME OF INJURY. THE SUPERVISOR GIVEEPPE CATANIA ONLY BECAME P OF THE INJURY WHEN EE CALLED OFF WORK ON 3-21-02 ON THE DAY AFTER THE INJURY. EE WAS APPARENTLY HANDLING SOME HEAVY PIECES OF STONE AT THE STONE SPLITTER AND A STRAINED HIS BACK DURING SHIFT.