Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shaped charges applied to mining. I -- Drilling holes for blasting
All shaped charges used in investigation were US Corps of Engineers demolition type in two sizes; tests proved that shaped charge has no practical application in functions of mining covered by this report; cost is over 20 times that of producing better hole with rock drill.
Shaped charges applied to mining. I -- Drilling holes for blasting
All shaped charges used in investigation were US Corps of Engineers demolition type in two sizes; tests proved that shaped charge has no practical application in functions of mining covered by this report; cost is over 20 times that of producing better hole with rock drill.
Shaped charges applied to mining. I -- Drilling holes for blasting
US Bur Mines -- Report Investigations
Draper, H.C. (Autor:in) / Hill, J.E. (Autor:in) / Agnew, W.G. (Autor:in)
1948
12 pages
Supp plates
Report
Englisch
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Online Contents | 1997
Online Contents | 1997
Online Contents | 1997
Online Contents | 1996
Online Contents | 1997