This point shapefile identifies ethylene crackers in the United States as of October 2014. Ethylene crackers are petrochemical complexes that process ethane into ethylene. This layer is part of a collection of GIS data produced by the U.S. National Energy Information Administration.This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data.