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41Short Sunderland — infobox Aircraft name = Sunderland type = Military flying boat manufacturer = Short Brothers caption = designer = first flight = 16 October 1937 introduced = 1938 retired = 1967 status = primary user = Royal Air Force more users = French Navy… …
42Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …
43Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
44Wing loading — In aerodynamics, wing loading is the loaded weight of the aircraft divided by the area of the wing. [Thom, 1988. p. 6.] It is broadly reflective of the aircraft s lift to mass ratio, which affects its rate of climb, load carrying ability, and… …
45USS Wahoo (SS-238) — See Wahoo for other ships of the same name.USS Wahoo (SS 238) was a Gato class submarine, the first United States Navy ship to be named for the wahoo, a dark blue food fish of Florida and the West Indies. (The other was SS 565.) Wahoo earned six… …
46Fokker C.V — infobox Aircraft name = C.V, C.VI, and C.IX type = Light recce, bomber aircraft manufacturer = Fokker caption = Finnish Fokker C.V E s designer = first flight = introduced = 1924 retired = status = primary user =Royal Netherlands Air Force more… …
47Witness accounts of the Roswell UFO incident — Follows are excerpts of witness accounts of the Roswell UFO incident.In 1978, author Stanton T. Friedman interviewed Jesse Marcel, who voiced his suspicion that debris he recovered on a ranch near Roswell in 1947 was not of this world. Over the… …
48Savoia-Marchetti heavy fighter prototypes — The Savoia Marchetti SM.88, SM.91 and SM.92 were Italian twin engined heavy fighter prototypes of World War II. All featured a dual fuselage structure and used German Daimler Benz engines. avoia Marchetti SM.88infobox Aircraft name = SM.88 type …
49nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …
50Operation Kita — Part of Pacific War, World War II Japanese battleship carrier Ise …
