President Obama had also promised to build a modern Chemical and Metallurgy Research Replacement facility for handling plutonium which was included in the Treaty Resolution of Ratification and presented in his message to the Senate upon entry of the treaty into force.

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"Stocks of fire-fighting foam containing this chemical have been phased out at Guernsey Airport now that a suitable replacement has become available, " added Deputy Flouquet.

BBC: Assurances over Guernsey water