slope control
91Battle of Passchendaele — For other uses, see Passchendaele (disambiguation). Battle of Passchendaele Third Battle of Ypres Part of the Western Front of the First World War …
92Anchorage, Alaska — Anchorage redirects here. For other uses, see Anchorage (disambiguation). Anchorage   Unified Borough and City   Municipality of Anchorage …
93Cornell University — Cornell redirects here. For other uses, see Cornell (disambiguation). Cornell University Emblem of Cornell University Motto I would found an institution where any person can find instruction in any study …
94tunnels 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 …
95Optical landing system — The Fresnel Lens Optical Landing System of Charles de Gaulle An optical landing system (OLS) (nicknamed meatball or simply, Ball ) is used to give glidepath information to pilots in the terminal phase of landing on an aircraft carrier.[1] From… …
96Seismic retrofit — Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. Other retrofit techniques are applicable to areas subject to tropical cyclones,… …
97Mann Gulch fire — Coordinates: 46°52′47″N 111°54′18″W / 46.8796°N 111.9049°W / 46.8796; 111.9049 The Mann Gulch fire of 1949 was a wildfire …
98National Register of Historic Places listings in North Dakota — Contents: Counties in North Dakota Adams | Barnes | Benson | Billings | Bottineau | Bowman | Burke | Burleigh | Cass | Cavalier | Dickey | Divide | Dunn | Eddy | Emmons | Foster | Golden Valley | Grand Forks | Grant | Griggs | …
99Prudhoe Bay Oil Field — Prudhoe Bay oil field …
100AFWA — Dies ist der erste Teil einer Liste der Abkürzungen und Akronyme, wie sie in der Luftfahrt und Militärluftfahrt verwendet werden. Viele Abkürzungen werden einfach durch Weglassen der Vokale gebildet. Liste der Abkürzungen Teil 1 A A (AA; AB; AC;… …
