Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Work of blasting out 7 1/2 mi of new highway in northeastern Minnesota; excavation of 500,000 cu yd of rock, and 500,000 cu yd of earth; earth excavation was sooty, black, pastelike material, probably glacial drift; difficult drilling due to great variety of rock types, drilling and blasting techniques, and explosives used.
Work of blasting out 7 1/2 mi of new highway in northeastern Minnesota; excavation of 500,000 cu yd of rock, and 500,000 cu yd of earth; earth excavation was sooty, black, pastelike material, probably glacial drift; difficult drilling due to great variety of rock types, drilling and blasting techniques, and explosives used.
New northwest passage
Explosives Engr
Houck, L.H. (Autor:in)
Explosives Engineer ; 38
1960
9 pages
Aufsatz (Zeitschrift)
Englisch
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