British Army uniform and equipment in World War I It contained an inner can of explosive with an outer can of metal fragments or ball bearings. The fuses that were developed for the Jam Tin Grenade were activated by friction or a by lighted taper which was often replaced by a lighted cigarette. This was followed by the highly successful Mills bomb in 1915. It was oval in shape to fit into a clenched fist and time fused. The detonator was activated by a spring driven firing pin which was restrained by a lever that in turn was locked by a safety pin. The Mills bomb was a defensive
Transport in Birmingham navigable. Birmingham is often lauded as having more miles of canal than Venice, true by a margin of nine miles (Venice has 26 miles). Birmingham however includes many semi-urban parts and is far larger than Venice making for a much lower canal density (concentration). The type of waterway is inland providing the main access to few properties. This contrasts to Venice's broad coastal canals providing the main means of access, surrounded by a lagoon of the Adriatic Sea. By water volume (taking into account depths), Birmingham has more cubic meters of water in its canals than any other city in