Mine plans - Strata and ground movements.
STANDARD published on 1.2.1999
Designation standards: DIN 21917:1999-02
Note: WITHDRAWN
Publication date standards: 1.2.1999
The number of pages: 15
Approximate weight : 45 g (0.10 lbs)
Country: German technical standard
Category: Technical standards DIN
Bergmännisches Rißwerk - Gebirgs- und Bodenbewegungen.