Figure 4.
The image depicts a graph illustrating particle size distribution. The horizontal axis represents particle size measured in millimetres, ranging from zero point zero zero one to ten. The vertical axis shows the percentage finer, ranging from zero to one hundred percent. Different sample data series are represented by distinct markers, diamonds, triangles, circles, crosses, stars, and filled diamonds, each corresponding to a specific sample with varying size ranges. A legend on the top left indicates the sample identifiers and their respective size ranges. The data is presented as a series of curves, showing how the percentage finer changes with particle size, allowing comparison across the different samples.Particle size distribution (PSD) of the scrutinised samples