EMPLOYEE REPORTED: AFTER SERVICING THE TAIL ROLLER BEARINGS FOR THE ""CROSS BELT"", WHEN TRAVELING BACK TO HIS TRANSPORTATION VEHICLE HE CRAWLED OVER A PILE OF COAL DRAGGING A 5 LB GREASE CAN. A S HE CROSSED THE COAL A BURNING SENSATION WAS FELT TO HIS LEFT GROIN. IT WAS DIAGNOSED AS A RUPTURE TO THE GROIN.