Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Twin tunnels will drain and ventilate flooded peruvian mine
Graton Tunnel project will provide flooded Casapalca metal mine with twin tunnels, one for ventilation, one for drainage; side-by-side bores aid in construction, since tremendous water flows encountered would have washed out any attempt to drive single bore.
Twin tunnels will drain and ventilate flooded peruvian mine
Graton Tunnel project will provide flooded Casapalca metal mine with twin tunnels, one for ventilation, one for drainage; side-by-side bores aid in construction, since tremendous water flows encountered would have washed out any attempt to drive single bore.
Twin tunnels will drain and ventilate flooded peruvian mine
Eng News-Rec
Engineering News-Record ; 173
1964
2 pages
Aufsatz (Zeitschrift)
Englisch
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| British Library Online Contents | 2012
| Engineering Index Backfile | 1931
Recovery of flooded tunnels at Milwaukee
Engineering Index Backfile | 1921