# SLIP OR FALL OF PERSON
> MSHA accident `220231710037` · 06/09/2023 · CEMEX Construction Materials South, LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall to the walkway or working surface
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Walking, Running
- **Injury source:** BLDG,STRUCT,BOAT,RAFT,NEC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.12 years
## Operator
- **Controller:** Cemex S A
- **Operator:** CEMEX Construction Materials South, LLC
- **Mine:** [4102885](https://api.ai-analytics.org/mine/4102885)
## Narrative

A layer of concrete dust and debris had collected on silo roof obscuring hatches lids, and other obstructions. Walking on roof tripped on one of the obstructions. Fell to right knee and struck something in the dust and twisted some on the way down. Local clinic did x-rays but nothing broken.  Received brace for sprain to unspecified site of right knee.

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