Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Driving one mile of rock tunnel across Mine Hill anticline made possible elimination of 178 ft of pumping head at Pine Knot shaft of Philadelphia and Reading Coal and Iron Co, Miners-ville, Schuylkill County, Pa; mechanical equipment used in rock tunnel construction.
Driving one mile of rock tunnel across Mine Hill anticline made possible elimination of 178 ft of pumping head at Pine Knot shaft of Philadelphia and Reading Coal and Iron Co, Miners-ville, Schuylkill County, Pa; mechanical equipment used in rock tunnel construction.
Tunnels reopen old sections
Coal Age
Richart, R.R. (Autor:in)
Coal Age ; 53
1948
7 pages
Aufsatz (Zeitschrift)
Englisch
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