# SLIP OR FALL OF PERSON
> MSHA accident `220173630003` · 12/27/2017 · Rio Tinto Kennecott Copper
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall from machine
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Getting on or off equipment
- **Injury source:** FLOOR,WALKING SURF-NOT UG
- **Nature of injury:** CONCUSSION-BRAIN,CEREBRAL
- **Body part:** BRAIN
- **Days lost:** 0
- **Mine experience:** 23.31 years
## Operator
- **Controller:** Rio Tinto Group
- **Operator:** Rio Tinto Kennecott Copper
- **Mine:** [4201996](https://api.ai-analytics.org/mine/4201996)
## Narrative

While preparing a reagent tanker for unloading an employee ascended the side ladder of the tanker trailer to access and inspect the vent cap.  At some point, the employee lost balance and fell into the adjacent containment area onto a concrete surface.

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