§ Mrs. Ewingasked the Secretary of State for Education and Science what is the highest level of radioactivity detected in meat and dairy produce samples submitted for examination in Scotland.
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§ Mrs. Shirley WilliamsThe investigation of dietary contamination with radioactivity from fall-out is now confined to milk as this has been proved to be an adequate index of contamination in the total food intake in Great Britain. Samples of milk from representative depots throughout Scotland are taken every two weeks and combined for analysis at quarterly intervals. The highest level of Strontium 90 in milk from Scotland was 55 picocuries per gramme of calcium, recorded in the summer of 1963. By mid-1967 the level in Scotland had fallen to 13.6 pCi Strontium 90/g. calcium and the downward trend continues.