# HANDTOOLS (NONPOWERED)
> MSHA accident `220082730029` · 09/18/2008 · Ash Grove Cement Co
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** HANDTOOLS (NONPOWERED)
- **Accident type:** Fall to the walkway or working surface
- **Occupation:** Superintendent
- **Activity:** Hand tools (not powered)
- **Injury source:** FLOOR,WALKING SURF-NOT UG
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 29.42 years
## Operator
- **Controller:** Ash Grove Cement Company
- **Operator:** Ash Grove Cement Co
- **Mine:** [1000006](https://api.ai-analytics.org/mine/1000006)
## Narrative

Left knee strain when attempting to turn broken packhouse screw with a 48"" pipe wrench.  The screw coupling piece collapsed and the wrench slipped causing the worker to fall backwards onto his left knee.  The sudden transfer of weight to the left knee caused the worker to fall, further straining his knee.

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