The modern systematic use of triangulation networks stems from the work of the Dutch mathematician Willebrord Snell (born Willebrord Snel van Royen), who in 1615 surveyed the distance from Alkmaar to Bergen op Zoom, approximately 70 miles (110 kilometres), using a chain of quadrangles containing 33 triangles in all.
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In the United States, which defines the furlong, chain, rod, and link in terms of the U.S. survey foot of exactly 1200⁄3937 metre, a furlong is approximately 201.1684 m long.
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Human Rights Watch previously documented work by children on United States tobacco farms, and urged tobacco companies to take concrete steps to eliminate hazardous child labor in their supply chains globally.
Recognition of the organization's role and position within the food chain is essential to ensure effective interactive communication throughout the chain in order to deliver safe food products to the final consumer.
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