HC Deb 26 March 1929 vol 226 c2232
6. Viscount SANDON

asked the Secretary of State for War if there is a section of the technical research Department of the War Office specifically dealing with the question of elimination of noise in mechanised vehicles?

The FINANCIAL SECRETARY to the WAR OFFICE (Mr. Duff Cooper)

No section is specially reserved for the purpose mentioned but the whole Department endeavours to achieve silence.