hand drilling
41Drill — For other uses, see Drill (disambiguation). Drill scheme A drill or drill motor is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or… …
42machine tool — machine tooled, adj. a power operated machine, as a lathe, used for general cutting and shaping of metal and other substances. [1860 65] * * * Stationary, power driven machine used to cut, shape, or form materials such as metal and wood. Machine… …
43coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
44mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
45Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
46Tap and die — Not to be confused with Tool and die. Taps and dies are cutting tools used to create screw threads, which is called threading. A tap is used to cut the female portion of the mating pair (e.g., a nut). A die is used to cut the male portion of the… …
47Military parade — The Grenadier Guards on parade outside Buckingham Palace, London …
48Liste von Pokerbegriffen — Pokerbegriffe sind verschiedene mehr oder auch weniger gebräuchliche, inoffizielle Bezeichnungen für spezielle Spielsituationen, Starthände, Kartenkombinationen und Eigenschaften der Spieler beim Pokerspiel. Da Poker im 19. Jahrhundert in den USA …
49List of Dallas episodes — This is a list of episodes of the soap opera Dallas. The original miniseries from 1978 was labeled as Season One when the series was initially released on DVD in 2004. Although Season One officially began with episode that aired September 23,… …
50List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
