Crumbling Scoria

153 5 x 0.002 = 30.61

0.002

1 50 x 0.202 = 30.3

0.202

x 0.004 = 0

0.004

x 0.004 = 0

0.004

x 0.003 = 0

0.003

x 0.003 = 0

0.003

x 0.007 = 0

0.007

x 0.191 = 0

0.191

x 0.003 = 0

0.003