INJURED PERSON WAS BENT DOWN ALONG THE OUTBY RIB WATCHING A COWORKER OPERATE THE CONTINUOUS MINER. HE WAS STRUCK BY A PIECE OF FALLING BROW CONSISTING OF MIXED COAL AND BONEY. IT MEASURED 4' X 2 1/2' X 15"". HE SUSTAINED A SPRAINED NECK, BACK, BRUISED SHOULDER AND CONTUSION TO RIGHT FOREARM.