# IGNITION OR EXPLOSION OF GAS OR DUST
> MSHA accident `220141350028` · 05/09/2014 · 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

At approximately 2:08pm the kiln operator received an alarm that the East and West explosion vents had opened on the #2 kiln coal mill system.  After inerting the system and required safety checks were completed an internal inspection was conducted.  Some accumulations of coal was found around the inside of the explosion vent framework.

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