# IGNITION OR EXPLOSION OF GAS OR DUST
> MSHA accident `220121840029` · 06/30/2012 · O-N Minerals (Chemstone 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:** Carmeuse Holding SA
- **Operator:** O-N Minerals (Chemstone Company)
- **Mine:** [4400026](https://api.ai-analytics.org/mine/4400026)
## Narrative

A fire in the plant was noticed. Gas line was observed leaking and on fire. Columbia Gas was called and informed us to let it burn until someone came out. 911 was then called. Columbia Gas then showed up at 6:15pm and turned the main valve off. We found the gas line leaving the pre-regulator clamped to a piece of angle and it was deteriorated at this point which caused the leak.

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