# SLIP OR FALL OF PERSON
> MSHA accident `220192690002` · 09/17/2019 · Terra Firma Materials LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall onto or against objects
- **Occupation:** Miner, Prospector, NEC
- **Activity:** Machine maintenance
- **Injury source:** ELECTRICAL APPARATUS,NEC
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 0.04 years
## Operator
- **Controller:** Oscar  Cuellar; Nancy  Cuellar Davenport
- **Operator:** Terra Firma Materials LLC
- **Mine:** [4104706](https://api.ai-analytics.org/mine/4104706)
## Narrative

Employee was loosening nut on bolt and when it became loose the employee lost balance and fell back hitting EE's back on electrical box.

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