b) The laboratory test results of a standard Proctor test are given in the following Table: [7] Volume of mold Weight of moist soil in Water content (ft') mold (Ib) (w%) 1/30 3.78 12 1/30 4.21 14 1/30 4.12 16 4.13 4.03 3.80 1/30 18 1/30 20 1/30 22 i) Determine the maximum dry unit weight of compaction and the optimum moisture content ii) Calculate and Plot y versus the moisture content for degree of saturation, S=80, 90, and 100% (Yzav). Given G,=2.68. c) Explain your views on the application of compaction in Petroleum and mining field. [7]