324: Petroleum and Coal Products Manufacturing
The Petroleum and Coal Products Manufacturing subsector is based on the
transformation of crude petroleum and coal into usable products. The
dominant process is petroleum refining that involves the separation of
crude petroleum into component products through such techniques as
cracking and distillation.
In addition, this subsector includes establishments that primarily
further process refined petroleum and coal products and produce
products, such as asphalt coatings and petroleum lubricating oils.
However, establishments that manufacture petrochemicals from refined
petroleum are classified in Industry 32511, Petrochemical