Mr Dockrell, from Ash, said the Canadian province of Saskatchewan clearly illustrated how the ban was effective in cutting smoking.

BBC: Smoking ban lessons from abroad

The government of the Province of Saskatchewan served notice this week that it would take a dim view of any state-controlled entity swallowing Potash Corp.

FORBES: Canadians See Red Over Chinese Potash Takeover

But another letter, from the premier of the Canadian province of Saskatchewan and signed by 10 state governors, stressed that the pipeline guaranteed energy supplies into the future from a reliable source.

BBC: Science & Environment

Areva controls one of the most lucrative uranium deposits in the Athabasca Basin in Saskatchewan, a province accounting for 30% of global uranium production.

FORBES: Money & Investing