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HEINRICH FU RST SOHNE
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HEINRICH FU RST SOHNE
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Publication of FR1042234ApublicationCriticalpatent/FR1042234A/en
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
E21D11/14—Lining predominantly with metal
E21D11/28—Longitudinal struts, i.e. longitudinal connections between adjoining arches
FR1042234D1951-09-171951-09-17
Bracing system (dowel) for steel support of mine galleries
ExpiredFR1042234A
(en)