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 to serve the city's airport and the National Exhibition Centre (NEC). There is a network of rail services within Birmingham and the West Midlands county, operated by West Midlands Trains and supported by Transport for West Midlands (TfWM) (formerly called Centro). During 2014/15, there were nearly 51 million rail passenger journeys in the TfWM area. Birmingham has the highest proportion of rail commuters in England outside London. In the past few decades the proportion of journeys into central Birmingham by rail has grown sharply: 27% of journeys into Birmingham city centre in the peak hours were made by rail in