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Progress report on development of columbium in Arkansas for 1953

Industrial silica deposits of the Pacific Northwest

Load relations in preloaded rockbolt testing

Published Year

• 1950-1959 (1)
• 1960-1969 (2)

Subject

• Mine roof bolting (1)
• Niobium ores--Arkansas--Analysis (1)
• Niobium--Metallurgy (1)
• Silica--Northwest, Pacific (1)

Author

• Parsons, E. W. (3) *
• Calhoun, W. A. (1)
• Carter, George J. (1)
• Fine, M. M. (1)
• Habberstad, J. L. (1)
• Kelly, Hal J. (1)
• Nieberlein, V. A. (1)
• Osen, Lars. (1)
• Rodriguez, E. R. (1)

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