Dum Dum Arsenal
The Dum Dum Arsenal was a British military facility located near the town of Dum Dum in modern West Bengal, India. The arsenal was at the centre of the Indian Rebellion of 1857, caused in part by rumours that the paper cartridges for their muzzle-loading rifles, which they were expected to bite open, were greased with pig lard (a problem for Muslims) or cow fat (a problem for Hindus).