EE WAS STANDING ON AN EXTENSION LADDER ABOUT 6' OFF FLOOR LEVEL. THERE WAS NO PLACE TO TIE THE LADDER SO ANOTHER PERSON WAS HOLDING THE LADDER. FALLING DUST GOT INTO THE EYES OF THE LADDER HOL DER AND HE RELEASED THE LADDER TO CLEAN HIS EYES. THE LADDER SLIPPED CAUSING THE WORKER TO FALL. THE FALL PROTECTION CAUGHT THE WORKER BUT ALLOWED HIS FOOT TO STRIKE SOMETHING.