THE EMPLOYEE WAS DOING HIS DAILY CHECK OF THE DUST COLLECTOR, PART OF THIS IS CHECKING THE LEVELOF COLLECTED MATERIAL. THE EMPLOYEE LIFTED THE LID OF THE BIN BUT COULD NOT SEE THE MATERIAL, SO HE MOVED CLOSER. THE DUSR COLLECTOR PULSATED ANDBLEW FINE MATERIAL ALL OVER HIS FACE AND COVEREDHIS GLASSES.