HC Deb 21 June 1977 vol 933 c447W
Mr. Wigley

asked the Secretary of State for Trade what consideration he has given to strengthening the controls on tankers to prevent them from polluting the sea when they wash out their tanks after completing deliveries to United Kingdom ports.

Mr. Clinton Davis

I would refer the hon. Member to the answer I gave him on 16th June 1977.—[Vol. 933, c. 277.]

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