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Time study analyses :progress report 1 : quarry shovel loading

Time-study analyses :progress report 2 : quarry haulage

Published Year

• 1930-1939 (2) *

Subject

• Quarries and quarrying--Equipment and supplies--Testing (2) *

Author

• Lintner, E. J. (2)
• Thoenen, J. R. (2)

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