EE WAS IN THE PROCESS OF GREASING THE BUCKET JACK ON THE OPERATOR'S SIDE OF A SCOOP, USING A ALEMITE 500 HAND HELD GREASE GUN. AS EE APPLIED DOWN FORCE TO THE PUMP HANDLE THE GREASE HOSE BLEW OFF THE GREASE FITTING STRIKING HIM IN THE EYES.EE WAS WEARING SAFETY GLASSES AT THIS TIME.