EE WAS OBSERVING AN ENGINE ON THE EX3500 EXCAVATOR, DUST WAS SENT AIRBORNE BY THE COOLING FAN AND MADE CONTACT WITH HIS RIGHT EYE. HE WAS WEARING Z87 APPROVED SAFETY GLASSES AT THE TIME. THE S HOVEL WAS SET AT LOW IDLE AND REMAINED STATIONARY WHILE EE WAS TROUBLESHOOTING A PROBLEM WITH THE ENGINE. IMMEDIATELY HE FLUSHED THE EYE WITH WATER AND REPORTED THE INCIDENT. HE WAS THEN TAKE