# SLIP OR FALL OF PERSON
> MSHA accident `220131160025` · 04/23/2013 · Martin Marietta Materials, Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall onto or against objects
- **Occupation:** Driller operator
- **Activity:** Getting on or off equipment
- **Injury source:** UNDERGRD MINING MACHINES
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** UPPER ARM/HUMERUS
- **Days lost:** 0
- **Mine experience:** 23.92 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials, Inc.
- **Mine:** [1301225](https://api.ai-analytics.org/mine/1301225)
## Narrative

While exiting the cab of the drill the operator was looking back at the engine compartment checking the AC unit which was worked on earlier that morning. At this point the EE said when he twisted to look in this area his knee gave out and he lunged forward catching himself with his right arm on the door jamb (EE was standing on the ground when knee gave out)

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