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Investigations of the raw material in hard-coal-mining; microscopical examinations of rocks.
STANDARD published on 1.7.1985
Designation standards: DIN 22021:1985-07
Note: WITHDRAWN
Publication date standards: 1.7.1985
SKU: NS-190962
The number of pages: 36
Approximate weight : 108 g (0.24 lbs)
Country: German technical standard
Category: Technical standards DIN
Rohstoffuntersuchungen im Steinkohlenbergbau; Unterteilung der Nebengesteine aufgrund mikroskopischer Untersuchungen zur Kennzeichnung technologischer Eigenschaften.
Latest update: 2026-07-10 (Number of items: 2 286 359)
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