§ Mr. Prittasked the Home Secretary whether information will shortly be available as to the results of further research into the problems mentioned in paragraph 62 of the Report of the Lord Privy Seal's conference of April last, Cmd. 6006, and particularly the problems of the effects of blast and the materials required for baffling it and protecting persons against its effects, and of the transmission of shock-waves through various materials; whether definite information was available on this problem of transmission when the thicknesses of wall and roof given in handbook 5A were settled; and which of the two thicknesses of special reinforced concrete necessary to resist a one-ton bomb mentioned in handbook 5, 6 feet or 11 feet, is to be regarded as authoritative?
§ Sir J. AndersonThe problems referred to in paragraph 62 of Cmd. 6006 have been the subject of constant research in the Research and Experiments Branch of the Air-Raid Precautions Department, who have the assistance of a number of distinguished scientists. The conclusions reached are reflected in the practical recommendations which are issued by the Department from time to time; but my right hon. Friend does not consider it advisable now to publish further results.