# HANDLING OF MATERIALS
> MSHA accident `220192880027` · 10/04/2019 · Thunder Basin Coal Company LLC
## Details
- **Degree of injury:** PERM TOT OR PERM PRTL DISABLTY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Struck by falling object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** AMPUTATION OR ENUCLEATION
- **Body part:** LOWER LEG/TIBIA/FIBULA
- **Days lost:** 129
- **Mine experience:** 3.38 years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Thunder Basin Coal Company LLC
- **Mine:** [4800977](https://api.ai-analytics.org/mine/4800977)
## Narrative

A Technician was in the process of replacing a rear strut on a 798 haul truck. As they removed the lower rear strut pin, the lower section of strut fell. This was caused by an unknown internal failure which allowed the lower section of strut to fall hitting the Technician in the leg. 

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