# MACHINERY
> MSHA accident `220130360007` · 01/24/2013 · United States Steel Corp-Minnesota Ore Operations
## Details
- **Degree of injury:** ACCIDENT ONLY
- **Classification:** MACHINERY
- **Accident type:** Accident type, without injuries
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 0
- **Mine experience:** — years
## Operator
- **Controller:** USX Corp (United States Steel Corp)
- **Operator:** United States Steel Corp-Minnesota Ore Operations
- **Mine:** [2103352](https://api.ai-analytics.org/mine/2103352)
## Narrative

Control operator observed large swings in the coal feed system.  The system was shut down and restarted approximately 2 minutes later.  Upon reactivating the system, the coal explosion suppression system activated.  The suppression system detected an increase in pressure and activated working as it is designed.  No employees in the area and no injuries reported from incident.

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