Cot Mattresses (Chemical Hazard) Mr. Nigel Griffiths To ask the Secretary of State for Trade and Industry when his Department first knew of biochemist Barry Richardson's work on the possible dangers of young babies from chemicals used in fire resistant mattresses and any link with cot death syndrome. Mrs. Virginia Bottomley [holding answer 12 March 1990]: I have been asked to reply.Mr. Richardson's work was first drawn to our attention by Mr. Mitchell in January 1989. In April 1989 we received further details of the hypothesis that fungal action on mattresses emitted toxic gases which were a possible explanation for sudden infant deaths. The laboratory of the Government Chemist was then asked to conduct a scientific assessment of the hypothesis. I understand that it has not, as yet, been able to confirm Mr. Richardson's findings. Its results are being referred to the group of experts which, as the hon. Member will know, the chief medical officer has invited to assess Mr. Richardson's work.