The bomb was designed for
aerial bombardment and maximum efficiency after being dropped. Therefore, the bomb had a very thin metal sheet as its only cover, as little as . A mixture of rubber and gasoline could be used in the field to produce a crude incendiary bomb. A mixture of white phosphorus and jelled gasoline also produced a flammable mixture. Other mixtures included: LA-60 in which crude latex was combined with caustic soda, coconut oil, and water, crepe rubber (CR) in which crude latex reduced to a solid by precipitation and kneading, LA-100 in which crude latex was dried until it was 100% solid, smoked rubber sheets (SR) in which crude latex that has been dried over a fire until it is 100% solid. When used with these fillers, the bomb used a black powder charge to ignite and scatter the incendiary materials. The bomb typically weighed about when the incendiary fillers are used. ==Variants==