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Geophysical Survey
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The measuring and recording of electrical resistivity or magnetism in order to determine the existence and outline of buried features such as walls and ditches. Geophysical techniques include resistivity survey, magnetometer survey and ground penetrating radar.
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Earthwork
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Earthworks can take the form of banks, ditches and mounds. They are usually created for a specific purpose. A bank, for example, might be the remains of a boundary between two or more fields. Some earthworks may be all that remains of a collapsed building, for example, the grassed-over remains of building foundations.
In the winter, when the sun is lower in the sky than during the other seasons, earthworks have larger shadows. From the air, archaeologists are able to see the patterns of the earthworks more easily. Earthworks can sometimes be confusing when viewed at ground level, but from above, the general plan is much clearer.
Archaeologists often carry out an aerial survey or an earthwork survey to help them understand the lumps and bumps they can see on the ground.
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Aerial Photograph
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Aerial photographs are taken during an aerial survey, which involves looking at the ground from above. It is usually easier to see cropmarks and earthworks when they are viewed from above. Aerial photographs help archaeologists to record what they see and to identify new sites. There are two kinds of aerial photographs; oblique and vertical.
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HOUSE *
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A building for human habitation, especially a dwelling place. Use more specific type where known.
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AMMUNITION DEPOT *
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A site, including buildings and hardstandings, used for the storage and distribution of ammunition.
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SITE *
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Unclassifiable site with minimal information. Specify site type wherever possible.
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BOMB SITE *
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A site which has been bombed but where there is no crater, eg. bombed buildings.
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ORDNANCE STORE *
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A building or site used by the armed forces for the storage and issuing of military stores and materials.
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BUILDING *
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A structure with a roof to provide shelter from the weather for occupants or contents. Use specific type where known.
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MILITARY DEPOT *
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A building or group of buildings, often enclosed by a system of fortifications, used by an armed force for the storage and distribution of military equipment.
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BOUNDARY *
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The limit to an area as defined on a map or by a marker of some form, eg. BOUNDARY WALL. Use specific type where known.
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BOMB STORE *
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A complex of buildings and earthworks constructed for the storage of bombs and pyrotechnics.
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FEATURE *
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Areas of indeterminate function.
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BARRACKS *
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A building used to house members of the armed forces.
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MILITARY CAMP *
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A site where a body of troops is temporarily or permanently lodged, with or without entrenchments and fortifications.
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ORDNANCE DEPOT *
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A building or site used by the armed forces for the storage and issuing of military stores and materials.
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TECHNICAL SITE *
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The area of a military base where engineering and maintenance functions are grouped.
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RAILWAY ENGINEERING SITE *
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Buildings, sites and structures associated with the construction and maintenance of railways and rolling stock.
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SEWAGE WORKS *
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A group of buildings in which local sewage is filtered and purified in large rectangular or circular tanks.
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STOREHOUSE *
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A building in which goods or items are stored. Use more specific type where known.
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SPOIL HEAP *
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A conical or flat-topped tip of waste discarded from a mine or similar site.
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AIR RAID SHELTER *
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A fortified structure used to protect civilians and military personnel from enemy bombing.
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NISSEN HUT *
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A prefabricated structure of a steel frame clad in corrugated iron. Semi-circular in section they were used as accommodation for the armed forces and, during WWII, as emergency housing for bombed out civilians. Also used for storage.
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STRUCTURE *
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A construction of unknown function, either extant or implied by archaeological evidence. If known, use more specific type.
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RAILWAY CUTTING *
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A man-made trough or valley through a hill, carrying at its base a railway.
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MUNITION HOUSE *
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A building for the storage of ammunition and other military stores.
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BLAST WALL *
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A reinforced wall designed to reflect the blast from an explosion. Often found associated with powder magazines, pillboxes and air raid shelters.
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RAILWAY *
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A line or track consisting of iron or steel rails, on which passenger carriages or goods wagons are moved, usually by a locomotive engine.
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TARGET *
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Any structure or object, used for the purpose of practice shooting by aerial, seaborne or land mounted weapons.
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DOMESTIC *
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This is the top term for the class. See DOMESTIC Class List for narrow terms.
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EARTHWORK *
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A bank or mound of earth used as a rampart or fortification.
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DEPOT *
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A building or site used as a storage and distribution centre.
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* Copyright of English Heritage (1999)