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September 1, 2014

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Mark Grisco fuels a small airplane at DuPage Airport in West Chicago, Ill., on May 9, 2014. Though not used in cars in the U.S., fuel containing lead is still used in some small, private aircraft.

Abel Uribe, Chicago Tribune / MCT

Mark Grisco fuels a small airplane at DuPage Airport in West Chicago, Ill., on May 9, 2014. Though not used in cars in the U.S., fuel containing lead is still used in some small, private aircraft.