NA 062
DIN Standards Committee Materials Testing
DIN 22020-4 [CURRENT] references following documents:
| Document number | Edition | Title |
|---|---|---|
| DIN 22011 | 1993-11 | Investigations of the raw material in hard-coal-mining; treatment of exploratory drillings More |
| DIN 22020-1 | 1998-08 | Investigations of raw material in hard-coal-mining - Microscopical examination of hard coal, coke and briquettes - Part 1: Terms, survey of processes and their applications More |
| DIN 22020-2 | 1998-08 | Investigations of raw material in hard-coal-mining - Microscopical examination of hard coal, coke and briquettes - Part 2: Preparation of polished surface from lump material and particulate blocks More |
