Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Control of dusts, fumes, gases in Delaware aqueduct tunnel
Dust determinations were made on one shaft sinking operation, and without use of any ventilation, concentration of 13 million particles per cu ft was found during drilling; positive ventilation was then introduced at rate fo 1800 cu ft perm in; fog cleared immediately, visibility was restored and dust concentration averaged 7 1/2 million particles per cu ft.
Control of dusts, fumes, gases in Delaware aqueduct tunnel
Dust determinations were made on one shaft sinking operation, and without use of any ventilation, concentration of 13 million particles per cu ft was found during drilling; positive ventilation was then introduced at rate fo 1800 cu ft perm in; fog cleared immediately, visibility was restored and dust concentration averaged 7 1/2 million particles per cu ft.
Control of dusts, fumes, gases in Delaware aqueduct tunnel
Gen Contractors Assn -- Bul
Harris, W.B. (Autor:in)
1942
3 pages
Aufsatz (Zeitschrift)
Englisch
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