Details are a bit sketchy but here's what I know. A Prince Georges County Maryland mowing crew cutting grass Friday had a mower blade either break or come loose from a mower. The blade hit one house and ricocheted off and then penetrated another house. The blade then broke a mirror on a wall showering a 4 month old baby with broken glass which cut the baby. The blade is reported to have weighed 15 pounds which might indicate that it was on a flail mower.