Plot the cumulative distribution given in Table 28.1 on logarithmic-probability paper. Is the plot linear over any range of particle sizes? How does the amount of fine material (smaller than 20-mesh) differ from what would be predicted from the size distribution of the coarser material?

Table 28.1

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TABLE 28.1 Screen analysis Mesh 468WM功循环8608129M 35 65 Pan Screen opening D. mum 3.327 2.362 1.651 1.168 0.833 0.589 0417 0.295 0.208 0.147 0.104 0.074 Mass fraction retained, x 0.0000 0.0251 0.1250 0.3207 0.2570 0.1590 0.0538 0.0210 0.0102 0.0077 0.0058 0.0041 0.0031 0.0075 Average particle diameter in increment, D, mm pis 4.013 2.845 2.007 1.409 1.001 0.711 0.503 0.356 0.252 0.178 0.126 0.089 0.037 Cumulative fraction smaller than D 1.0000 0.9749 0.8499 0.5292 0.2722 0.1132 0.0594 0.0384 0.0282 0.0205 0.0147 0.0106 0.0075 0.0000