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60.60 Standard published
60.60 Standard published
90.93 Standard confirmed
90.60 Close of review
90.60 Close of review
60.60 Standard published
Drainage and overflow chutes for mine drives. Cross sections and dimensions
90.60 Close of review
90.60 Close of review
60.60 Standard published
60.60 Standard published
60.60 Standard published
60.60 Standard published
Explosive atmospheres - Explosion prevention and protection - Part 2: Basic concepts and methodology for mining
90.93 Standard confirmed