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41Locks and weirs on the River Thames — The English River Thames is navigable from Lechlade to the sea, and this part of the river falls 71 metres (234 feet). There are 45 locks on the river, each with one or more adjacent weirs. These lock and weir combinations are used for… …
42Anderson River (Northwest Territories) — Infobox River river name = Anderson River caption = origin =north of Great Bear Lake mouth =Beaufort Sea basin countries = Canada length =692 km elevation = mouth elevation = discharge = watershed = The Anderson River is in the Northwest… …
43Great Orme Tramway — The Great Orme Tramway ( cy. Tramffordd y Gogarth) is a cable hauled RailGauge|42 gauge tramway in Llandudno in north Wales.This is Great Britain s only remaining cable operated street tramway and one of only three surviving in the world.… …
44German war crimes — The government of Germany ordered, organized and condoned several war crimes in both World War I and World War II. The most notable of these is the Holocaust in which millions of people were murdered or died from abuse and neglect, 60% of them… …
45weapons and warfare, siege — Modern scholars are unsure when the first sieges of fortified towns in Mesopotamia and surrounding regions took place. Most experts agree that the existence of fortified walls, especially brick and stone ones, around many early towns indicates …
46Bartel BM-6 — infobox Aircraft name =Bartel BM 6 type =Trainer aircraft manufacturer =Samolot caption = designer = first flight = 8 April 1930 introduced = retired = status = Prototype primary user = Polish Air Force more users = produced = number built = 1… …
47Downtown Ossining Historic District — U.S. National Register of Historic Places U.S. Historic district …
48Coat of arms of Pope Benedict XVI — The coat of arms of Pope Benedict XVI The coat …
49Dunster Castle — Dunster, Somerset, England Dunster Castle …
50Space elevator safety — There are many safety issues associated with the construction and operation of a space elevator. A space elevator would present a considerable navigational hazard, both to aircraft and spacecraft. Aircraft could be dealt with by means of simple… …
