# SLIP OR FALL OF PERSON
> MSHA accident `220092510032` · 08/27/2009 · Freeport-McMoRan Sierrita Ops.
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall onto or against objects
- **Occupation:** Quality control technician, Laboratory technician, Laboratory assistant
- **Activity:** Machine maintenance
- **Injury source:** SURFACE MINING MACHINES
- **Nature of injury:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** HEAD,NEC
- **Days lost:** 0
- **Mine experience:** 0.1 years
## Operator
- **Controller:** Freeport-McMoRan Inc
- **Operator:** Freeport-McMoRan Sierrita Ops.
- **Mine:** [0200144](https://api.ai-analytics.org/mine/0200144)
## Narrative

Employee was working on the CAS system of the D-10 dozer attempting to remove the GPS antenna. He lost his footing and fell between the rear ripper cylinders and struck the back of his head. He was using fall protection with a retractable lanyard.

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