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Page 6278, results 156926 - 156950

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Stratigraphic sections of the Phosphoria formation in Idaho (third Idaho report)
Frank W. O’Malley, D.F. Davidson, R.A. Hoppin, R.P. Sheldon
1952, Open-File Report 52-111
The first of a series of reports giving detailed stratigraphic sections of the Phosphoria formation in the Western phosphate field as measured and described by the Geological Survey will soon be published as Circulars. Because of the needs of industry for many of these data during the 1951 field season,...
Phosphate deposits of the Concepcion del Oro district, Zacatecas, Mexico
Cleaves Lincoln Rogers, Salvador Ulloa, Eugenio Tavera
1952, Open-File Report 52-131
The two small Mexican plants that are currently producing acid-phosphate fertilizer from phosphate rock have a productive capacity of about 45,000 metric tons annually. The larger plant processes pebble phosphate imported from Florida, while the other is utilizing material from the small, widely scattered phosphate deposits of Nuevo Leon. Large-scale...