The giant mowing pan on the SCDOT tractor parked in the hay field at Ben Snipes’ farm off Riverside Road immediately grabbed Clay Coley’s attention during Tuesday’s 4-H Agriculture Safety Day.Sitting under an awning beneath a shade tree to beat the heat, Coley, 6, listened as Bryan Baker, trade specialist for the local SCDOT right-of-way and vegetation management, explained how the tractor’s mowing pan can throw debris more than 300 feet.“That’s as long as a football field,” Baker said.“I like that tractor