Toy firework devices

Other compositions for toy fireworks 22.3 Toy firework devices(Matrix method)... 

Silver fulminate is so sensitive and so dangerous to handle that it has not been used for practical purposes in blasting or in the military art. It early found use in toys, in tricks, and in such devices for entertainment as those which Christopher Grotz described in 1818 in his book on The Art of Making Fireworks, Detonating Balls, c. ... 

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