grinding size("The feed size is 80% passing 1.0 mm", "Rod and ball mills take the ore down to an 80% passing size of 60 microns", "A sample of 15 kg is stage crushed to 100% passing 12.7mm" vbadalov)
passing size("The feed size is 80% passing 1.0 mm", "Rod and ball mills take the ore down to an 80% passing size of 60 microns", "A sample of 15 kg is stage crushed to 100% passing 12.7mm" vbadalov)