Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Inundated anthracite reserves: Eastern Middle field of Pennsylvania
Reserves in each pool studied; amount of minable coal calculated; description of Eastern Middle field and reserves; methods of unwatering by means of drainage tunnel, central underground pumping plant and deep well pumping plant proposed; maps, cross sections, photographs.
Inundated anthracite reserves: Eastern Middle field of Pennsylvania
Reserves in each pool studied; amount of minable coal calculated; description of Eastern Middle field and reserves; methods of unwatering by means of drainage tunnel, central underground pumping plant and deep well pumping plant proposed; maps, cross sections, photographs.
Inundated anthracite reserves: Eastern Middle field of Pennsylvania
U S Bur Mines -- Bul
Ash, S.H. (Autor:in) / Kynor, H.D. (Autor:in) / Fatzinger, R.W. (Autor:in) / Davies, B.S. (Autor:in) / Gilbert, J.C. (Autor:in)
1950
28 pages
Bibliography
Report
Englisch
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