Firefighters and DEQ employees work to clean up a hazardous materials spill on Mississippi 607 in Hancock County, north of Interstate 10 on Thursday, after the initial incident closed part of I-10 for several hours Wednesday night. Mississippi Department of Environmental Quality and Mississippi Highway Patrol worked overnight to clean up a hazardous-materials spill on Mississippi 607 north of Interstate 10. A corrosive product leaked from its container on a truck that resulted in Wednesday night's shutdown of I-10 from Hancock County and across the Louisiana state line.