EE WAS SPOT BOLTING AN OUTBY ENTRY USING A SINGLE BOOM ROOF BOLTER WITH ATRS. HE WAS HOLDING A 1 1/8"" X 36"" DRILL STEEL IN HIS LEFT HAND. THE DRILL STEEL WAS APPARENTLY RESTING ON HIS LEFT FOO T. WHILE LOWERING THE DRILL BOOM THE DRILL STEEL IN HIS LEFT HAND WAS STRUCK BY THE BOOM AND PUNCTURED HIS LEFT FOOT.