This class includes :

Extraction of crude petroleum oils

Extraction of bituminous or oil shale and tar sand

Production of crude petroleum from bituminous shale and sand

Process to obtain crude oils; decantation, desalting, dehydration, stabilization, etc.

This class excludes :

Support activities for oil and gas extraction, see 0910;

Oil and gas exploration, see 0910;

Manufacture of refined petroleum products, see 1920;

Recovery of liquified petroelum gases in the refining of petroleum, see 1920;

Operation of pipelines, see 4930