§ Mr. Masonasked the Prime Minister whether the Medical Research Council has monitored fall-out on the Pennine 20W range in the same detail as it has on the Welsh mountains; what fall-out of strontium 90 has been recorded; and to what extent it has been found in sheep bones.
§ Mr. R. A. ButlerI have been asked to reply.
Although monitoring of fall-out in the Pennines has not been done in the same detail as in certain areas of the Welsh mountains, samples have been taken from two sites there and arrangements to increase this number are in hand. The data on fall-out of strontium 90 and the amounts found in sheep bone samples are contained in periodical reports published by the Atomic Energy Authority, copies of which are placed in the Library of the House as they become available.