Albert Salter was a provincial land surveyor in Ontario in the mid-19th century. He is historically most notable for having discovered magnetic abnormalities at what is now Creighton Mine in Greater Sudbury, while surveying a baseline westward from Lake Nipissing in 1856. The area was then examined by Alexander Murray of the Geological Survey of Canada, who confirmed "the presence of an immense mass of magnetic trap".
Due to the then-remoteness of the Sudbury area, however, Salter's discovery did not have much immediate impact. The later construction of the Canadian Pacific Railway through the area, however, made mineral exploration more feasible and finally resulted in the development of a mining settlement in 1883.
Salter's Meridian is commemorated by a historical plaque in the Naughton neighbourhood of Sudbury.
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