# MACHINERY
> MSHA accident `220041840058` · 06/04/2004 · Chevron Mining Inc
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by falling object
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Roof bolter, Drilling
- **Injury source:** CAVING ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 65
- **Mine experience:** 5.25 years
## Operator
- **Controller:** Chevron Corporation
- **Operator:** Chevron Mining Inc
- **Mine:** [0100759](https://api.ai-analytics.org/mine/0100759)
## Narrative

Employee stated he was roof bolting in the face area and when starting the drill steel a piece of scale rock fell, striking him on the left knee. EE's first lost work day did not occur until 6/21/04.  EE LOST AN ADDITIONAL 17 DAYS FROM 11/18/04 UNTIL 12/13/04 DUE TO A 2ND MINOR SURGERY ON HIS LEFT KNEE.

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