Manufacturing, Production & Wholesale All Categories... CHEMICAL/MANUFACTURING/PROCESSING go Results Found: 4 Button group with nested dropdown Citgo Petroleum Corp./Lemont Refinery Citgo Petroleum Corp./Lemont Refinery 135th Street & New Avenue Lemont IL 60439 (630) 257-7761 Visit Website Osco Oil Osco Oil 13351 Main Street Lemont IL 60439 (630) 257-8000 Visit Website Seneca Petroleum Company Seneca Petroleum Company P.O. Box 219 Lemont IL 60439 (630) 257-2268 IMTT-Illinois, Lemont Facility IMTT-Illinois, Lemont Facility 13589 Main Street Vineyard UT 84059 (630) 257-6222 Visit Website