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- BAM - Federal Institute for Materials Research and Testing
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DIN 21913-4
Bergmännisches Risswerk - Tiefbau - Teil 4: Gefahren- und Schutzbereiche
Mine plans - Deep mining - Part 4: Hazardous zones, zones of protective measures
DIN 21911
Bergmännisches Risswerk - Tagesgegenstände und Höhenlinien
Mine plans - Objects on the surface and contour lines
DIN 21912-1
Bergmännisches Risswerk - Tagebau - Teil 1: Allgemeine Anforderungen
Mine plans - Opencast mining - Part 1: General requirements
DIN 21773
Gears - Cylindrical involute gears and gear pairs - Inspection dimensions of tooth thickness
DIN 21802
Zeichen der Grubenwehren und Gasschutzwehren
Symbols for mine rescue and gas protection squads
DIN 21901
Bergmännisches Rißwerk; Aufbau und Übersicht der Normen; Allgemeine Grundsätze
Mine plans; structure and list of standards; general principles
DIN 21901-2
Mine plans - Structure and list of standards - Part 2: General rules for symbols of mine plans