Dust & DPM — Rock Dust Inerting (Coal)
Rock Dust Inerting (Coal) for mine air quality management.
Rock dusting works by heat theft: in an explosion's pressure wave, inert limestone dust absorbs the energy the coal dust needs to propagate. The 80% TIC rule came from post-disaster forensics — and float dust deposition resets the ratio continuously, which is why dusting is a schedule, not an event.
Formula
Note: Mine ventilation is statutory and life-safety territory: airflow quantities, gas limits and re-entry times must be set by the registered ventilation engineer/manager under your jurisdiction's mining regulations — this calculator is a planning and training aid.
Rock Dust Inerting (Coal) for mine air quality management. A free mine ventilation & air quality tool — no sign-up, no upload, instant results in your browser.
About Dust & DPM — Rock Dust Inerting (Coal)
Dust & DPM — Rock Dust Inerting (Coal) computes the governing relationship mass balance: (I₀ + x)/(T₀ + x) = TIC_target live as you type. Rock dusting works by heat theft: in an explosion's pressure wave, inert limestone dust absorbs the energy the coal dust needs to propagate. The 80% TIC rule came from post-disaster forensics — and float dust deposition resets the ratio continuously, which is why dusting is a schedule, not an event. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Dust & DPM — Rock Dust Inerting (Coal)
- 1Enter your values — Float coal dust accumulation, Required total incombustible, Current incombustible content (sensible defaults are pre-filled).
- 2Read the live results: Rock dust to add.
- 3Check the "with your numbers" line to see mass balance: (I₀ + x)/(T₀ + x) = TIC_target substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Dust & DPM — Rock Dust Inerting (Coal)?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula mass balance: (I₀ + x)/(T₀ + x) = TIC_target with authoritative sources cited on the page (MSHA 30 CFR Parts 57/75 — Ventilation standards; ACGIH — Threshold Limit Values (TLVs); McPherson, M.J., Subsurface Ventilation and Environmental Engineering)
- ✓Rock dusting works by heat theft: in an explosion's pressure wave, inert limestone dust absorbs the energy the coal dust needs to propagate.
- ✓Niche-specific defaults give a meaningful worked answer the moment the page loads
Frequently asked questions
What formula does the dust & dpm — rock dust inerting (coal) use?+
It evaluates mass balance: (I₀ + x)/(T₀ + x) = TIC_target, exactly as published. Sources: MSHA 30 CFR Parts 57/75 — Ventilation standards; ACGIH — Threshold Limit Values (TLVs); McPherson, M.J., Subsurface Ventilation and Environmental Engineering. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
Rock dusting works by heat theft: in an explosion's pressure wave, inert limestone dust absorbs the energy the coal dust needs to propagate. Mine ventilation is statutory and life-safety territory: airflow quantities, gas limits and re-entry times must be set by the registered ventilation engineer/manager under your jurisdiction's mining regulations — this calculator is a planning and training aid.
When is this calculator the right tool for the job?+
Rock Dust Inerting (Coal) for mine air quality management. A free mine ventilation & air quality tool. The 80% TIC rule came from post-disaster forensics — and float dust deposition resets the ratio continuously, which is why dusting is a schedule, not an event. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Do I need to install anything or create an account?+
No. The tool is pure client-side JavaScript: open the page and it works, offline once loaded, with no account, no quota and no data leaving your device.
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