by means of power accumulators to be pre-charged by rock pressure

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Industry

CPC
E21D15/5813

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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D15/00Props Chocks

Current Industry

E21D15/5813by means of power accumulators to be pre-charged by rock pressure

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