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Use of pulverized rock as dense medium for salvaging coal from Pittsburgh-bed refuse

Published Year

• 1950-1959 (1)

Subject

• Coal preparation (1) *
• Coal--Pennsylvania--Allegheny County (1)

Author

• Jolley, T. R. (1)
• Palowitch, Eugene R. (1)
• Sokaski, M. (1) *

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