Mills bomb incorporated into the Mills Bomb. The Mills bomb was adopted by the British Army as its standard hand grenade in 1915, and designated the No. 5. The Mills bomb underwent numerous modifications. The No. 23 was a variant of the No. 5 with a rodded base plug which allowed it to be fired from a rifle. This concept evolved further with the No. 36, a variant with a detachable base plate to allow use with a rifle discharger cup. The final variation of the Mills bomb, the No. 36M, was specially designed and waterproofed with shellac for use initially in
Interstate 70 in West Virginia from the old National Road and US 40. The first portion of what is now known as I-70 to be completed across West Virginia was the Fort Henry Bridge across the main channel of the Ohio River, built in 1955. WVDOT began obtaining right-of-way for I-70 in 1961. The Wheeling Tunnel, linking downtown Wheeling and the Fort Henry Bridge to the eastern suburb of Elm Grove, was completed in 1967 at a cost of $7 million (equivalent to $ in ). The bridge that carries I-70 from the Ohio state line onto Wheeling Island was completed in 1968. Construction of