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PRODUCTS/SERVICES Track Construction and Maintenance Friction Management Programs including Installation of Wayside Lubricators Offering the only EPA-approved and USDA-designated biobased track lubricants Locations – Railmark operates from 10 Rail Service Centers located in: Yreka CA Denver CO Georgetown LA Mansfield LA Henderson KY Cleveland OH Metro Louisville KY Iuka MS Pocatello ID Paulsboro NJ.