THE EE STATED HE WAS USING A FIRE HOSE TO WASH DOWN UNDER BOTTOM ROLLERS ON D BELT WHEN HE LOST THE PRESSURE ON HIS HOSE. HE WENT TO THE CUT-OFF VALVE AND TURNED THE VALVE ALL THE WAY OPEN. WH EN HE DID, THE HOSE HAD TOO MUCH PRESSURE TO HOLD. HE TRIED TO THROW THE HOSE DOWN AND IT STRUCK HIS LEFT JAW.