Mills bomb incorporated into the Mills Bomb. The Mills bomb was adopted by the British Army as its standard hand grenade in 1915, and designated the No. 5. The Mills bomb underwent numerous modifications. The No. 23 was a variant of the No. 5 with a rodded base plug which allowed it to be fired from a rifle. This concept evolved further with the No. 36, a variant with a detachable base plate to allow use with a rifle discharger cup. The final variation of the Mills bomb, the No. 36M, was specially designed and waterproofed with shellac for use initially in
Science and invention in Birmingham so small into the shell of an egg, that the membrane remains intact. This is being developed for use in operations on the inner ear. A project to use fibre optics instead of electric sensors in aircraft fuel tanks is also being undertaken, cutting substantially the risk of sparks setting off an explosion. Science and invention in Birmingham Birmingham is one of England's principal industrial centres and has a history of industrial and scientific innovation. It was once known as 'city of a thousand trades' and in 1791, Arthur Young (the writer and commentator on British economic life) described Birmingham