Science and invention in Birmingham pen nibs per week. 1915: William Mills develops the first "safe grenade" meaning it is safe for the soldier throwing it rather than his opponent. It is named the Mills bomb, and is adopted by the British Army as its standard hand grenade in 1915. 75,000,000 grenades are supplied during The Great War. 1918: Much work is carried out by Oliver Lucas's company on the design and improvement of the military search light, he also designs a signalling lamp after experiences at the Somme and the design is later used by the British Army. 1920: Charles Henry Foyle invents the
Telephone numbers in Malta the prefix 09, which were already eight digits, changed to 99. The digit 0 was to be dialled from outside Malta as well as domestically. Other non-geographic number ranges also changed, with the prefix for seven-digit mailbox numbers changing from 07 to 217. Similarly, the prefix for pager numbers changed from 70 and 71 to 7117 The prefix for Go Mobile is 79 Telephone numbers in Malta Malta adopted a new telephone numbering plan in 2001–2002, in which telephone numbers were expanded to eight digits for fixed line and mobile numbers. Previously, fixed line numbers were six digits, while mobile,