# Mine accident
> MSHA accident `220040560029` · 02/17/2004 · Thunder Basin Coal Company LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** —
- **Accident type:** No Value Found
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 254
- **Mine experience:** — years
## Operator
- **Controller:** Ashland Inc
- **Operator:** Thunder Basin Coal Company LLC
- **Mine:** [4800977](https://api.ai-analytics.org/mine/4800977)
## Narrative

ONE INCH NYLON STRAP HOLDING CHAIN ROLLER BOX BROKE, CAUSING IT TO FALL APPROX 6 FT STRIKING MILLWRIGHT IN THE TOP OF THE HARD HAT.

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