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Page 5876, results 146876 - 146900

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Phosphate rock in Colombia - a preliminary report, with a section on the phosphate occurrence at Turmeque
James Bachelder Cathcart, Francisco Zambrano O., Pedro Mojica G.
1967, Open-File Report 67-43
Exploration for phosphate rock in Colombia was successfully carried out in 3 1/2 months by the U.S. Geological Survey and the Inventorio Minero of the Servicio Geologico Nacional, under the auspices of the U.S. Agency for International Development. A modern theory of exploration based on model studies of phosphorite deposits...
Ground-water aspects of the lower Henrys Fork region, Idaho
E.J. Crosthwaite, M.J. Mundorff, E.H. Walker
1967, Open-File Report 67-71
The lower Henrys Fork region includes the plains and low benches between Ashton and the junction of Henrys Fork and Snake River in eastern Idaho. The northwestern and western parts of the area are part of the Snake River lava plain. The central part of the area is occupied by...