# IGNITION OR EXPLOSION OF GAS OR DUST
> MSHA accident `220083590025` · 12/14/2008 · Heidelberg Materials US Cement LLC
## Details
- **Degree of injury:** ACCIDENT ONLY
- **Classification:** IGNITION OR EXPLOSION OF GAS OR DUST
- **Accident type:** Accident type, without injuries
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 0
- **Mine experience:** — years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Heidelberg Materials US Cement LLC
- **Mine:** [1200063](https://api.ai-analytics.org/mine/1200063)
## Narrative

The #3 coal mill system explosion vents opened at 8:06 PM due to an increased pressure created by an ignition of coal dust.  High coal mill temperatures occured prior to the event which resulted in coal burning in the inlet duct of the coal mill.  There were no personnel injuries or equipment damages.

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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*