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(From Our Regular Correspondent)Jan. 16, 1937.
Elaborate Preparations Against Attacks with Poison Gas
Britain will soon be the first country in the world to have gas masks available for the whole of the civil population of the capital. Scientific and technical experts have worked out a difficult and new problem: how to produce a simplified and improved gas mask, which can be made by the million by mass production methods. At a factory established by the government the output will soon be half a million masks a week and it is proposed to make 30 million, sufficient for the whole civilian population. The components of a gas mask are a light metal container filled with activated charcoal, several pieces of wire gauze, a thick wad of absorbent cotton, some layers of muslin fabric, metal springs and a rubber mask or face piece into which the container is fixed.
Foreign Letters. JAMA. 1937;108(8):652–656. doi:10.1001/jama.1937.02780080046021