Ghengis Fireworks - The Ultimate Fear is a 4″ ground mine, it just comes under the UK legal sound limit for a firework, which is 120db. These will be made illegal next year and then only available to commercial firework lighters.

It is a shame that YouTube’s video player supresses the sound, it is awesome!

http://www.ghengisfireworks.co.uk/Product/610/ultimate-fear-4-inch-mine.aspx