# IGNITION OR EXPLOSION OF GAS OR DUST
> MSHA accident `220073120021` · 10/31/2007 · Lafarge Building Materials Incorporated
## 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:** Lafarge S A
- **Operator:** Lafarge Building Materials Incorporated
- **Mine:** [3800305](https://api.ai-analytics.org/mine/3800305)
## Narrative

There was a hot spot in the precal coal fines bin that was stirred up. The stirring conditions were created when attempts were made to withdraw the hot material to the HGG and when the Pre-Cal Coal Mill DC started. The start of the DC introduced new aerated coal into the bin. At this point all conditions were met to form the unplanned ignition.

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