hollow-buttress dam
1Dam — This article is about structures for water impoundment. For other uses, see Dam (disambiguation). Hoover Dam, a concrete arch gravity dam in Black Canyon of the Colorado River. Lake Mead in the background is impounded by the dam …
2Haweswater Reservoir — Infobox lake lake name = Haweswater Reservoir image lake = Haweswater from Harter Fell 3.jpg caption lake = seen from high up on Harter Fell image bathymetry = caption bathymetry = location = Lake District, Cumbria coords =… …
3tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
4United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …
5Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
6List of communities in Saskatchewan — Communities of the Province of Saskatchewan, Canada are incorporated towns, cities, villages, and resort villages and unincorporated organized hamlets.[1] Regional rural forms of administration are rural municipalities.[clarification needed]… …
7Comunidades en Saskatchewan — Las Comunidades de la provincia de Saskatchewan, Canadá son todas las villas, ciudades, pueblos, incorporados, villas turísticas y aldeas organizadas no incorporadas.[1] Las formas rurales regionales de administración son municipalidades… …
8Zion National Park — IUCN Category II (National Park) …
9France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… …
10technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
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