c$.$ Although this soil has only $6\%$ non$-$plastic silty fines, it has everything else! It has

gravel content of $78\%$ fine to coarse subrounded to subangular gravel, and $16\%$

fine to coarse surrounded to subangular sand. The maximum size of the surrounded

boulders is $500$ mm $.$ The uniformity coefficient is $40,$ while the coefficient of

curvature is only $0\mathrm{.}8.$