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Calcite hardness number
From the following page of a levelling field book, the missing values in F. S. and B. S respectively are Station B. S. I. S. F. S. Rise Fall Remarks 1 4.550 Starting Point 2 2.125 ? 0.750 Change point 3 2.225 4 ? 1.975 Change point 5 2.445 1.500
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In sand stowing high local velocity of sand results.