HC Deb 20 September 1948 vol 456 c508
56. Mr. Boyd-Carpenter

asked the Minister of Agriculture and Fisheries whether he will make a statement as to the causes of the deaths of large numbers of fish in the Hogsmill river during August.

Mr. T. Williams

The Thames Conservancy carefully investigated this matter immediately it was brought to their notice. They established that the fish were killed by a toxic substance but were unable to determine its nature or origin. They are watching the position closely, but I hope there will be no recurrence of the trouble.

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