Emergency — Stench Gas Coverage Time
Stench Gas Coverage Time for mine emergency preparedness planning.
Ethyl mercaptan warnings travel at the speed of the slowest airway — half an hour to remote workings is common, which is why stench is the backup, not the primary alarm. Run the release during ventilation surveys: the coverage-time map IS the survey, repurposed for emergencies.
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.
Stench Gas Coverage Time for mine emergency preparedness planning. A free mine ventilation & air quality tool — no sign-up, no upload, instant results in your browser.
About Emergency — Stench Gas Coverage Time
Emergency — Stench Gas Coverage Time computes the governing relationship t = distance / air velocity live as you type. Ethyl mercaptan warnings travel at the speed of the slowest airway — half an hour to remote workings is common, which is why stench is the backup, not the primary alarm. Run the release during ventilation surveys: the coverage-time map IS the survey, repurposed for emergencies. 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 Emergency — Stench Gas Coverage Time
- 1Enter your values — Furthest workings from injection, Mean airway velocity (sensible defaults are pre-filled).
- 2Read the live results: Time to full coverage.
- 3Check the "with your numbers" line to see t = distance / air velocity substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Emergency — Stench Gas Coverage Time?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula t = distance / air velocity with authoritative sources cited on the page (MSHA 30 CFR Parts 57/75 — Ventilation standards; McPherson, M.J., Subsurface Ventilation and Environmental Engineering)
- ✓Ethyl mercaptan warnings travel at the speed of the slowest airway — half an hour to remote workings is common, which is why stench is the backup, not the primary alarm.
- ✓Niche-specific defaults give a meaningful worked answer the moment the page loads
Frequently asked questions
What formula does the emergency — stench gas coverage time use?+
It evaluates t = distance / air velocity, exactly as published. Sources: MSHA 30 CFR Parts 57/75 — Ventilation standards; 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?+
Ethyl mercaptan warnings travel at the speed of the slowest airway — half an hour to remote workings is common, which is why stench is the backup, not the primary alarm. 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?+
Stench Gas Coverage Time for mine emergency preparedness planning. A free mine ventilation & air quality tool. Run the release during ventilation surveys: the coverage-time map IS the survey, repurposed for emergencies. 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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