A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Automatic apparatus for closing levels in mine shafts
Illustrated description of automatic, doors operated by the passage of the cage, avoiding the danger of men or tram-cars falling down the shaft. (1500 w.)
Automatic apparatus for closing levels in mine shafts
Illustrated description of automatic, doors operated by the passage of the cage, avoiding the danger of men or tram-cars falling down the shaft. (1500 w.)
Automatic apparatus for closing levels in mine shafts
Appareils Automatiques de Fermeture des Recettes dans le Puits de Mines
Schmerber, H. (author)
1898
Article (Journal)
French
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