# MACHINERY
> MSHA accident `220062540067` · 08/24/2006 · Alcoa World Alumina LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Struck by... NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Surface equipment, NEC
- **Injury source:** JACKS-MECH,HYDRL,AIR,ETC
- **Nature of injury:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** HEAD,NEC
- **Days lost:** 0
- **Mine experience:** 10.4 years
## Operator
- **Controller:** Alcoa Inc
- **Operator:** Alcoa World Alumina LLC
- **Mine:** [4100320](https://api.ai-analytics.org/mine/4100320)
## Narrative

EE & co-worker were using pneumatic jacks to position motor for #4 rod mill in R-25. Jack was placed between fabricated backstop & base of motor. EE had positioned his jack in preparation to move motor & had enough pressure on jack to keep it in place against backstop. While waiting for co-worker to position other jack, backstop failed. Base of jack slipped off & hit EE in head.

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