EE WAS SHOVLING FINES INTO A WHEELBARROW AT THE CRUSHER. HE WAS USING A#2 SQUARE NOSE SHOVEL. HE FELT A STRAIN IN HIS LOWER BACK BUT DID NOT REPORT IT. HE WAS ON HIS LAST SHIFE BEFGORE HIS 4 D AYS OFF. HE WENT TO A CHIROPROACTOR ON HIS DAYS OFF WHICH THIS AN MSHA REPORTABLE.