EE WAS STANIDNG IN A CORNER OF THE QUARRY ABOUT 450' FROM A BLAST. SHOT WAS COVERED WITH A MAT BUT A SMALL PIECE OF FLYROCK WENT UP AND CAME DOWN, STRIKING EE IN HARD HAT AND SAFETY GLASSES. H AT BROKE AND GLASS FRAME IMPACTED HEAD RESULTING IN CUT OVER EYE AND CORNEAL ABRASIONS.