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Search results with tag "Secondary ventilation"
UNDERGROUND VENTILATION (METALLIFERROUS MINES) …
www.dmp.wa.gov.auEffective secondary ventilation can be established only if the primary ventilation system itself is adequately designed and operated. The two systems are in fact an integrated whole. An unbalanced primary and secondary combination can cause re-circulation, which is inefficient and potentially hazardous.
UNDERGROUND VENTILATION (METALLIFERROUS …
www.dmp.wa.gov.auEffective secondary ventilation can be established only if the primary ventilation system itself is adequately designed and operated. The two systems are in fact an integrated whole. An unbalanced primary and secondary combination can cause re-circulation, …