# IGNITION OR EXPLOSION OF GAS OR DUST
> MSHA accident `220050410001` · 02/04/2005 · The National Lime & Stone Company
## 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:** National Lime & Stone Co.
- **Operator:** The National Lime & Stone Company
- **Mine:** [3300122](https://api.ai-analytics.org/mine/3300122)
## Narrative

A leaking natural gas valve allowed gas to accumulate in the Dorr-Oliver dryer control room. The gas was apparently ignited by an electrical device inside the room.  The resulting blast severely damaged the walls of the control room and caused a partial roof collapse.

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