Table 1.

Fraction analysis (by % weight) of particles.

Outer Layer		Core Layer
Screen Hole Size (mm)	Content (%)	Screen Hole Size (mm)	Content (%)
1.25	8.8	5.0	12.0
1.0	1.2	3.15	25.6
0.8	9.4	2.0	31.4
0.63	12.2	1.25	10.6
0.4	26.4	0.63	8.4
0.2	17.6	0.32	1.4
Dust	14.5	Dust	0.6
Total	100	Total	100