# MACHINERY
> MSHA accident `220071430011` · 05/12/2007 · Argos Puerto Rico Corp
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by flying object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Handling supplies or material
- **Injury source:** JACKS-MECH,HYDRL,AIR,ETC
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** KNEE/PATELLA
- **Days lost:** 240
- **Mine experience:** 3 years
## Operator
- **Controller:** Italcementi Spa
- **Operator:** Argos Puerto Rico Corp
- **Mine:** [5400120](https://api.morvs.ai/mine/5400120)
## Narrative

Employee was working in the removal of gear box from the spare drive shaft of E01 chain. Two hydraulic jacks with supplemental pieces were used. While the jacks were in pressure the gear box was heated to clear the interference between the couplings. As the coupling came loose one of the supplements slipped out and hit the employee on his right leg.

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