d_sample_prep_so
| CODE | DESCRIPTION | CATEGORY | FROM_YEAR | TO_YEAR |
|---|---|---|---|---|
| MA01 | No sieving and milling | Sieving and Milling | 1984 | |
| MA02 | Sieving and/or crushing mesh size < 2 mm | Sieving and Milling | 1984 | |
| MA03 | Sieving and/or crushing other mesh size | Sieving and Milling | 1984 | |
| MA04 | Milling to 150 micrometer | Sieving and Milling | 1984 | |
| MA05 | Milling as fine as possible | Sieving and Milling | 1984 | |
| MA99 | Other sieving and milling method | Sieving and Milling | 1984 |