d_sieving_so

CODE DESCRIPTION FROM_YEAR TO_YEAR
1.00 Sieving and/or crushing 1984  
1.10 Mesh size < 2 mm 1984  
1.20 Other mesh size 1984  
2.00 Milling 1984  
2.10 To 150 micrometer 1984  
2.20 As fine as possible 1984  
9.00 Other method 1984