# HANDLING OF MATERIALS
> MSHA accident `220083640039` · 12/06/2008 · Prairie State Generating Company LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Struck by... NEC
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Machine maintenance
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.19 years
## Operator
- **Controller:** Prairie State Energy Campus Management Inc
- **Operator:** Prairie State Generating Company LLC
- **Mine:** [1103193](https://api.ai-analytics.org/mine/1103193)
## Narrative

The EE was assisting arch assembly on the invert during slope construction. A 3"" yellow mine discharge pipe had become frozen. Air from a surface mounted air compressor had been applied to the discharge line to remove the ice. When the ice exited the pipe, it caused the pipe to recoil, striking the EE at the knee. X-rays were negative for broken bones.

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