# MACHINERY
> MSHA accident `220171770009` · 06/13/2017 · 4 R Equipment LLC
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** MACHINERY
- **Accident type:** Struck by flying object
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Machine maintenance
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** UPPER ARM/HUMERUS
- **Days lost:** 46
- **Mine experience:** 0.15 years
## Operator
- **Controller:** Ron  Robinson Jr; Ryan C  Clark
- **Operator:** 4 R Equipment LLC
- **Mine:** [3503470](https://api.ai-analytics.org/mine/3503470)
## Narrative

While adjusting a hydraulic cylinder with a portable pump a quick coupling fitting malfunctioned leading the crew to believe the pressure was bleed off when it was not. while removing the quick coupling from the cylinder it flew off and hit the miner in the arm causing tore muscle and damaged artery. The miner is expected to miss 4 to 6 weeks of work.

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