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Rescuers with a victim of the 2008 Sichuan earthquake Rescue teams evacuating residents from flooded areas during Hurricane Katrina. Urban search and rescue (abbreviated as USAR [1] or US&R [2]) is a type of technical rescue operation that involves the location, extrication, and initial medical stabilization of victims trapped in an urban area, namely structural collapse due to natural ...
There are three types of marks used by stonemasons. [1] Banker marks were made on stones before they were sent to be used by the walling masons. These marks served to identify the banker mason who had prepared the stones to their paymaster. This system was employed only when the stone was paid for by measure, rather than by time worked.
The program was formally inaugurated with a series of listings on October 9, 1960; as of August 21, 2020, there are 2,597 designated landmarks. A National Historic Landmark (NHL) is generally a building, district, object, site, or structure, that is officially recognized by the United States government for its
An Ordnance Survey cut mark in the UK Occasionally a non-vertical face, and a slightly different mark, was used. The term benchmark, bench mark, or survey benchmark originates from the chiseled horizontal marks that surveyors made in stone structures, into which an angle iron could be placed to form a "bench" for a leveling rod, thus ensuring that a leveling rod could be accurately ...
Survey markers, also called survey marks, survey monuments, or geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying . A benchmark is a type of survey marker that indicates elevation ( vertical position ).
The National Register of Historic Places in the United States is a register including buildings, sites, structures, districts, and objects. The Register automatically includes all National Historic Landmarks as well as all historic areas administered by the U.S. National Park Service. Since its introduction in 1966, more than 97,000 separate ...
Fire insurance marks are metal plaques marked with the emblem of the insurance company which were affixed to the front of insured buildings as a guide to the insurance company's fire brigade. These identification marks were used in the eighteenth and nineteenth century in the days before municipal fire services were formed. [ 1 ]
The use of house marks dates back to long before literacy was common. The purpose of a house mark is to have a recognisable mark that a person, a nuclear family, multiple generations of an extended family or an owner of a property can use to mark objects, cattle, or buildings for recognition of ownership.