# SLIP OR FALL OF PERSON
> MSHA accident `220093070029` · 10/26/2009 · Martin Marietta Materials Inc
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall from machine
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Getting on or off equipment
- **Injury source:** MINE FLOOR,BOTTOM,FOOTWAL
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 11 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials Inc
- **Mine:** [2500998](https://api.ai-analytics.org/mine/2500998)
## Narrative

Employee lowered the manlift of the roof bolter to the mine floor. Employee stepped out of the basket and felt his knee pop. EE reported it to his supervisor aproximately 3 hours later. Diagnosed as strained ligament. EE stating his knee had been bothering him for about a month prior to this.

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