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Examination of controlled recirculation implementation in an underground nonmetal mine.
Min Eng 2014 Dec; 66(12):49-55
Controlled recirculation of ventilation air in underground metal and nonmetal mines has the potential to improve airflow and the health and safety of miners when implemented properly. Previous research by Robinson, Marks, Cecala and others concluded that the success of a district recirculation system is predicated upon an adequate supply of fresh air and the use of a reliable monitoring system for safe operation. This recent research also showed that contaminant levels will not exceed pre-recirculation levels, and that district recirculation can improve the dilution of face contaminants, especially methane gas.
Air-quality; Air-flow; Ventilation; Ventilation-systems; Underground-mining; Health-protection; Safety-measures; Monitoring-systems; Methanes; Gases; Miners; Mine-gases; Nonmetal-mining; Metal-mining; Room-and-pillar-mining
Issue of Publication
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division