Here is a article from Lee County Ga the confirms my belief that if not Mulching you should at least have a operator controlled discharge chute. And to make it even worse it doesn't appear the the mower operator stopped. "Lee County man struck by mowers projectile" A rock flung by a lawn mower sends a Lee County resident to the hospital after hitting him in the head. ALBANY A Lee County man had to have metal plates put into his head after a rock flung from a lawn mower broke through his drivers window. John Williford, 35, was driving along Lovers Lane Road at about 11 a.m. Wednesday when a rock flung by one of the countys lawn mowers broke the drivers window of his Ford Taurus and hit him in the head, Willifords mother, Linda Hutcheson, said Thursday. After hitting him in the head, the rock which was about 10 inches in diameter ricocheted into the roof of the car, leaving an indentation on the outside of the vehicles roof, Hutcheson said. He blacked out, Hutcheson said Wednesday afternoon. When he came to he was bleeding so heavy, and there was nobody around. He knew he needed medical help. We just want the whole community to pray for him; hes got three boys at home. Williford drove himself to Phoebe Putney Memorial Hospital after he regained consciousness. A Phoebe spokeswoman said Williford was in good condition Thursday, although Hutcheson said he was fluctuating in and out of consciousness. Lee County Sheriffs deputies responded to the hospital after being called about the incident, a report shows. The deputies found Willifords car outside the hospital with the parking brake engaged and the engine idling. There was blood on the left rear fender, the right front fender, and throughout the front seats of the vehicle, the report states. There was a dent on the roof by (where) the drivers head (would be) that protruded out from the interior, and a corresponding gash in the headliner. The report also states that a large brown rock was under one of the front seats.