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This page contains instructions involving gunpowder or other explosive or pyrotechnic compositions. Preparing explosives as described has caused severe injuries and deaths, and is illegal in most places.
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Iron Sand for Fireworks
Used to give corruscations in fireworks, is far better than iron or steel-filings. It is made by beating cast steel or iron into small pieces on an anvil. These are sifted into 4 sizes, the smallest for the smallest pieces, and vice versa. The corruscations produced by these 12 parts; sulphur, 4 parts; black sulphuret of are exceedingly brilliant. The sand should antimony, 1 part.