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Mr. Livingstone
To ask the Secretary of State for Defence what assessment of the medical effects of the CS gas solvent, methyl isobutyl ketone has been made by officials of his Department since 1990; how many published or internal reports have been written on this subject by his Department's medical officers since 1990; and how many of these reports are currently unclassified. [12176]
Mr. Spellar
I will write to my hon. Friend and a copy of my letter will be placed in the Library of the House.