# MACHINERY
> MSHA accident `220070110041` · 12/20/2006 · Argos Puerto Rico Corp
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Struck by... NEC
- **Occupation:** Welder (shop)
- **Activity:** Hand tools (powered)
- **Injury source:** HAND TOOLS,POWERED,NEC
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** MULTIPLE PARTS (MORE THAN ONE MAJOR)
- **Days lost:** 0
- **Mine experience:** 2.5 years
## Operator
- **Controller:** Italcementi Spa
- **Operator:** Argos Puerto Rico Corp
- **Mine:** [5400120](https://api.ai-analytics.org/mine/5400120)
## Narrative

Workers were preparing to remove the roller bearing from the intermediate symetro gear using a tri-jaw hydraulic gear puller. After securing the puller and applying the pressure, they started warming up the roller so it would begin loosening the bearing. On a sudden release of the bearing, one of the puller jaws slung out impacting the worker's left hand and chest.

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