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Production of Phosphate, Pyrite, and Sulphur in North America, 1913



Title: Production of Phosphate, Pyrite, and Sulphur in North America
Projection: Unknown,
Source Bounding Coordinates:
W: 180 E: -10 N: 80 S: 0

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Description: ÒProduction of phosphate, pyrite, and sulphur in North America in 1913É Each dot represents 1 per cent of worldÕs production. A cross represents less than 1/2 per cent of worldÕs production. — Department of the Interior, 1921
Source: Department of the Interior , World Atlas of Commercial Geology (Washington, DC: Department of the Interior , 1921) Plate 50
Map Credit: Courtesy the private collection of Roy Winkelman
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 Maps ETC > North America > Complete Maps > Production of Phosphate, Pyrite, and Sulphur in North America, 1913
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