tension control bolt
81Arms industry — Workers assemble pistols at the John Inglis munitions plant, Canada, April 1944 The arms industry is a global industry and business which manufactures and sells weapons and military technology and equipment. It comprises government and commercial …
82Lock picking — is the act of unlocking a lock by analyzing and manipulating the components of the lock device, without the original key. Although lock picking can be associated with criminal intent, it is an essential skill for a locksmith. Lock picking is the… …
83Tap 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… …
84Chain gun — The M242 25 mm Chain gun A chain gun is a type of machine gun or autocannon that uses an external source of power, rather than diverting energy from the cartridge, to cycle the weapon, and does so via a continuous loop of chain similar to that… …
85Apollo 15, Return to Earth — After the Apollo 15 Lunar Module Falcon lifted from the lunar surface it rendezvoused and docked with the Command/Service Module Endeavour . After transferring across the lunar samples and other equipment, Falcon was jettisoned. It would fire its …
86Architecture and Civil Engineering — ▪ 2009 Introduction Architecture For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)). Beijing was the centre of the world of architecture… …
872000s (decade) — …
88Chabad-Lubavitch related controversies — This article examines controversial issues involving the Chabad Lubavitch movement. For a more complete examination of Chabad, see the main article. Part of a series on Chabad …
89Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
90History of Vietnam — The history of Vietnam begins around 2,700 years ago. Successive dynasties based in China ruled Vietnam directly for most of the period from 111 BC until 938 when Vietnam regained its independence.cite book |last=Kenny |first=Henry J. |year=2002… …
