# IGNITION OR EXPLOSION OF GAS OR DUST
> MSHA accident `220122620007` · 09/07/2012 · Mesabi Nugget Delaware, 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:** Kobe Iron Nugget, LLC; Ferrous Resources, LLC
- **Operator:** Mesabi Nugget Delaware, LLC
- **Mine:** [2103689](https://api.ai-analytics.org/mine/2103689)
## Narrative

Air was found cross-tied with nitrogen feeding the cooler. During a ramp down of production, it is believed that air mixed with combustible gases caused sufficient pressure to open the relief door on cooler. There were no injuries or damage to equipment. All safety precautions in place at the time worked to keep employees safe.

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