What is the purpose of measuring air quantity at multiple points in mine airways?

• A. To ensure adequate dilution of contaminants and to adjust ventilation.
• B. To determine ore grade.
• C. To schedule meetings.
• D. To calculate payroll.

Answer: (A)

Measuring air quantity at several points in mine airways is about making sure the ventilation system provides enough air flow everywhere to dilute and remove contaminants. By taking readings at multiple locations, you can see how air moves through the network, identify areas where air may be too slow or circulating poorly, and spot changes caused by obstructions, new development faces, or fan performance. With that information, you can adjust the system—balancing dampers, changing fan speed, or reconfiguring ducts—to achieve uniform air distribution and keep contaminant concentrations at safe levels. If you only measure in one place, you risk missing problem areas and underestimating exposure. The other options—determining ore grade, scheduling meetings, or calculating payroll—aren’t related to ventilation or air quality control.