# MACHINERY
> MSHA accident `220122920019` · 10/16/2012 · BHP Navajo Coal Company
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Caught in, under or between a moving and a stationary object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** SURFACE MINING MACHINES
- **Nature of injury:** CRUSHING
- **Body part:** ARM,NEC
- **Days lost:** 20
- **Mine experience:** 6.79 years
## Operator
- **Controller:** BHP Billiton
- **Operator:** BHP Navajo Coal Company
- **Mine:** [2900097](https://api.ai-analytics.org/mine/2900097)
## Narrative

Maintenance mechanics were removing boom point sheave from the boom point saddle with a crane. As sheave was being guided out the employee's right arm was caught between sheave and boom structure.

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