New Delhi, Dec 4: The Central government on Monday told the Supreme Court that it was considering banning the import of pet coke as it urged the court to exempt the cement, lime and power plants from the ban on its use. “We are considering banning the import of pet coke,” a bench of Justice Madan B. Lokur and Justice Deepak Gupta was told by Additiol Solicitor General Atmaram dkarni. The US is the largest exporter of pet coke oil.