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US gas produced by 'fracking' to be exported for the first time

16 July 2013 Last updated at 20:14 BST

US gas produced by the controversial technique of "fracking" is due to be exported for the first time.

A $20bn project to prepare an export terminal is under way in Louisiana.

One of the first contracts will see shale gas shipped to Britain under a contract with Centrica.

David Shukman reports.