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Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process. The presence on an item of a recycling code, a chasing arrows logo, or a resin code , is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
The Historical Marker Database (HMdb.org) is an online database that documents locations of numerous historical markers and commemorative plaques in the United States as well as other countries. The database was launched in 2006 by computer programmer J. J. Prats. [1] The HMdb was launched in 2006 with 179 markers that Prats had personally ...
The marker was formerly located inside a median in the center of Georgia Avenue, just north of the Avenue's intersection with Kalmia Road and Alaska Avenue. [89] This marker is between the former site of the Northeast No. 1 and the present site of the Northeast No. 2 boundary markers of the original District of Columbia.
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 ).
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The orange markers separate opposing traffic lanes. The blue marker denotes a fire hydrant on the left sidewalk. A raised pavement marker is a safety device used on roads. These devices are usually made with plastic, ceramic, thermoplastic paint, glass or occasionally metal, and come in a variety of shapes and colors.
A boundary marker, border marker, boundary stone, or border stone is a robust physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in direction of a boundary. [1] There are several other types of named border markers, known as boundary trees, [2] [3] pillars, monuments, obelisks, and ...
At times of plague, it was common to mark the doors of victims of the disease with a large painted cross, either in red or black paint. In later times, large printed crosses were often affixed to doors. Daniel Defoe reported, at the time of the Great Plague in 1665, that the Lord Mayor of London, in his regulations, stated: [2]