5923349 ?Steel-Helmets for Munitions Girls in Northern Factory?, 1940 circa (b/w photo) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: ?Steel-Helmets for Munitions Girls in Northern Factory?, 1940 circa. Photograph, World War Two, Home Front, 1940 circa. Munition workers were issued with grey ?Brodie? style steel helmets to protect against shrapnel and falling debris during air-raids. Thousands of women worked in British factories during the war. They released manpower for the armed forces. One of 58 British Official photographs depicting scenes from the British Home Front.); by National Army Museum ; out of copyright.