Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Increase in high fan pressures underground requires more attention to door construction, maintenance and supervision; effect of high ventilating pressures, factors in door and airlock construction, materials used for making doors, fittings, general remarks on door construction, and types of doors.
Increase in high fan pressures underground requires more attention to door construction, maintenance and supervision; effect of high ventilating pressures, factors in door and airlock construction, materials used for making doors, fittings, general remarks on door construction, and types of doors.
Notes on ventilation doors
Mine Ventilation Soc South Africa -- J
Grave, D.F.H. (Autor:in)
1963
4 pages
Aufsatz (Zeitschrift)
Englisch
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