Search U.S. government technical reports digitized or harvested by TRAIL.

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Primary crushing :progress report no. 1

Primary crushing :progress report no. 2

Primary crushing :progress report no. 3

Published Year

• 1930-1939 (3)

Subject

• Ore-dressing (3) *
• Quarries and quarrying (1)

Author

• Sheppard, Mark. (3) *
• Witherow, C. N. (1)

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