A massive explosion killed four people and injured dozens others, some critically, at a county fair in Medina, Ohio last evening. Witnesses tell InjuryBoard.com that an antique tractor engine exploded about 6:30 p.m., sending shrapnel and hot oil flying into the air. The tractor engine, built in 1918 and steam operated, was being positioned in an exhibit of antique farm equipment when the accident occurred. Authorities are calling the explosion an accident and they do not suspect fowl play.

Killed in the explosion were Cliff Kovacic, 45; his son, William, 27; Alan Kimble, 46; and Dennis Jungbluth, 58. Dozens of other victims were airlifted to numerous area hospitals. Most injuries involved severe burns, broken bones, and shrapnel wounds. One witness told InjuryBoard.com that pieces of the steam engine weighing ten pounds or more were found up to 100 yards from the scene.

Local officials vowed that the fair would go on as scheduled. This tragic accident is not the first to occur at the Medina fair. Last year, thirty people became ill after consuming refreshments contaminated with E. coli bacteria.