crushing testing gravel 2mm in order to 19 millimeters

21 A riffler with 250 mm openings 22 The following test sieves complying with SABS 197 with sieves larger than 475 mm of perforated plate and sieves 475 mm and smaller of wire mesh a A 190 mm sieve recommended diameter 450 mm b A 630mm 530mm 375mm 265mm and 190 mm sieve recommended diameter 300 mm with a pan