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Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 1: Support units and general requirements
60.60 Standard published
Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 2: Power set legs and rams
60.60 Standard published
Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 3: Hydraulic and electro hydraulic control systems
60.60 Standard published