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Calcimator

Mine Ventilation Calculator

Calculate CFM requirements from mine volume, diesel equipment HP, personnel count, and altitude.

Inputs

ft³
HP
ft

Results

Required CFM

25,000 CFM

CFM by Volume25,000 CFM
CFM by Diesel20,000 CFM
CFM by Personnel4,000 CFM
Altitude Factor1
Air Velocity250 FPM
Fan Power (est.)14 HP
How to Use This Calculator
  1. Enter the mine volume (cu ft) — total excavated airspace underground.
  2. Set total diesel HP for all underground equipment operating simultaneously.
  3. Enter number of workers underground at peak shift.
  4. Set desired air changes per minute and altitude (ft) for density correction.
  5. Review Required CFM — the governing ventilation requirement — and compare against fan specifications.
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