# MACHINERY
> MSHA accident `220232000020` · 07/18/2023 · Performance Proppants LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Struck by... NEC
- **Occupation:** Welder (shop)
- **Activity:** Grinding
- **Injury source:** ABRAS STONE,WHEEL GRINDER
- **Nature of injury:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.04 years
## Operator
- **Controller:** Pro Frac Holding Corp
- **Operator:** Performance Proppants LLC
- **Mine:** [1600543](https://api.ai-analytics.org/mine/1600543)
## Narrative

EE was using a 9""grinder to remove some old welds from the dryer. EE was tied off and sitting on the dryer while grinding. EE started to slip so EE reached back to grab the safety line to regain balance causing the grinder to strike EE's knee. EE received 10 stitches to the right knee and was given a post-accident drug screen.

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