field ditch system

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• Lower Harz Pond and Ditch System — Topography of the Harz Mountains. The dividing line between the Upper and Lower Harz runs roughly along a line from Ilsenburg to Bad Lauterberg, the Lower Harz (Unterharz) being the eastern, less high, region. Within the Lower Harz region (in the …   Wikipedia

• Drainage system (Agriculture) — An agricultural drainage system is a system by which the water level on or in the soil is controlled to enhance agricultural crop production.=Classification=Figure 1 classifies the various types of drainage systems. It shows the field (or… …   Wikipedia

• Séré de Rivières system — The Séré de Rivières system was an ensemble of fortifications built from 1874 and first used at the beginning of the First World War along the frontiers and coasts of France. It derived its name from the man who conceived it, Raymond Adolphe Séré …   Wikipedia

• Construction of the Trans-Alaska Pipeline System — The construction of the Trans Alaska Pipeline System was a massive undertaking involving tens of thousands of people often in extreme temperatures and conditions. Specialized construction techniques were pioneered to build the pipeline, most of… …   Wikipedia

• 1st Battalion, 320th Field Artillery (United States) — Infobox Military Unit unit name= 1st Battalion, 320th Field Artillery Regiment caption=320th Field Artillery Regiment coat of arms dates= 1917 country= United States allegiance= branch= Regular Army type= Field Artillery role= size= Battalion… …   Wikipedia

• Trans-Alaska Pipeline System — The Trans Alaska Pipeline System (TAPS), usually called the Alyeska Pipeline in Alaska or the Alaska Pipeline elsewhere, is a major U.S. oil pipeline connecting oil fields in Alaska s North Slope to a North Pacific seaport where the oil can be… …   Wikipedia

• British hardened field defences of World War II — Hexagonal pillbox (type 22) British hardened field defences of World War II were small fortified structures constructed as a part of British anti invasion preparations. They were popularly known as pillboxes by reference to their shape.[1] Con …   Wikipedia

• Metric system — This article is about the metric system in general. For information about specific versions of the system, such as the International System of Units or the cgs system of units, see #Variants. For a generally accessible and less technical… …   Wikipedia

• irrigation and drainage — ▪ agriculture Introduction  artificial application of water to land and artificial removal of excess water from land, respectively. Some land requires irrigation or drainage before it is possible to use it for any agricultural production; other… …   Universalium

• Anthropology and Archaeology — ▪ 2009 Introduction Anthropology       Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… …   Universalium

• Upper Harz Ditches — Hutthal Ditch Control weir on the Dyke Ditch where it discharges …   Wikipedia