Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Methods of controlling air flow in stopes include seal across lower strike limit, seal across gully or raise-winze connection, temporary seal, and seal parallel to face; construction and application of seals; application of vermiculite concrete.
Methods of controlling air flow in stopes include seal across lower strike limit, seal across gully or raise-winze connection, temporary seal, and seal parallel to face; construction and application of seals; application of vermiculite concrete.
Quality control of air in stopes
Mine Ventilation Soc S Africa -- J
Botha, B.J.R. (Autor:in)
1961
8 pages
Aufsatz (Zeitschrift)
Englisch
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