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
Interstate 70 in Missouri is a large interchange with Route 9 in the Loop's northeastern corner. At that corner, US 24 splits to the east, I-29 ends, and US 71 joins. Once it leaves I-35, I-70 turns south, with interchanges to more roads. At the southeastern corner, I-70, US 40, US 71 all exit the Loop. I-70 and US 40 split off to the east, and US 71 continues south. I-670 ends at the alignment. Not long after they usurpt that alignment, I-70/US 40 turn southeast. US 40 departs from I-70 at exit 7A. I-70 then interchanges with I-435, the beltway around Kansas City.