EE ALLEGES HE WAS WALKING DOWN STAIRS ON SECOND LEVEL OF WASH TOWER & SOMEONE LEFT A CROWBAR ON STAIRS. HE DID NOT SEE IT BECAUSE IT WAS COVERED W/DUST. HE STEPPED ON IT & ROLLED CAUSING HIS FEET TO SLIP OUT FROM UNDER HIM WHICH CAUSED HIM TO FALL. EE ALLEGES HE FELL ONTO HIS BUTT & LANDED IN A SITTING POSITION ON THE STEP ABOVE WHERE THE CROWBAR WAS LOCATED. HE ALLEGES A STRAIN.