Mine Ventilation Airflow Calc

MSHA Airflow CFM & Pressure

$1.99 · Designed for iPad. Not verified for macOS.

Professional field calculator for industry professionals. Planning underground ventilation and need to know the required CFM for your crew size, diesel equipment, and airway dimensions? This calculator gives you MSHA-compliant airflow requirements in seconds. Select mine type (coal, metal/non-metal, or tunnel), enter airway shape and dimensions, and specify personnel and diesel HP underground. Get required airflow, air velocity, and resistance calculations instantly. WHAT YOU GET: - Required CFM based on personnel count (MSHA minimums) - Diesel dilution airflow requirement - Airway cross-section area for rectangular, arch, or circular openings - Air velocity at the calculated flow rate - Airway resistance using Atkinson friction factors - Fan pressure requirements MINE TYPES: Coal (30 CFR 75.325), Metal/Non-Metal (30 CFR 57.8520), and Tunnel — each with correct minimum CFM per person and velocity requirements. AIRWAY SHAPES: Rectangular, arch (horseshoe), and circular — with proper area and perimeter calculations for each. RESISTANCE: Atkinson friction factor input with typical ranges for smooth (40-60) and rough (80-120) airways. Works completely offline. No account required. Built for mining engineers, ventilation planners, and safety officers who need fast, MSHA-referenced airflow calculations underground.

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Bug fixes and performance improvements.

Version 1.0.1

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    Information

    Seller
    • Shanghai Sheyuan Network Technology Co., Ltd.
    Size
    • 998.4 KB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Sheyuan Inc.
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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