# SLIP OR FALL OF PERSON
> MSHA accident `220200580020` · 02/20/2020 · Thunder Basin Coal Company LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall from machine
- **Occupation:** Front-end loader, Scraper-loader operator, Pan operator, Payloader, Scraper rig operator
- **Activity:** Getting on or off equipment
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 73
- **Mine experience:** 14.5 years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Thunder Basin Coal Company LLC
- **Mine:** [4800977](https://api.ai-analytics.org/mine/4800977)
## Narrative

The equipment operator tore the quadriceps muscle and patellar tendon on EE's right knee when EE missed a ladder rung dismounting the equipment.  Surgery was required to repair the torn tissues. 

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