I WAS OPERATING A ROOF BOLT MACHINE, I HAD INSERTED THE RESIN & THE BOLT AND HAD TURNED BACK TO THE CONTROLS WHEN A FLAKE (6""X1 1/2"" THICK) OF SHALE STRUCK MY HARD HAT AND MY FACE. THE INJURY DID NOT INVOLVE ANY ASPECT OF COMPLIANCE WITH RULES OR REGULATIONS, JOB SKILLS, TRAINING OR ATTITUDE OR PROTECTIVE ITEMS.