# SLIP OR FALL OF PERSON
> MSHA accident `220052700051` · 09/12/2005 · 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 scaffolds, walkways, platforms
- **Occupation:** Bull gang foreman, Labor foreman, Leadman, Section foreman, Shift boss
- **Activity:** Getting on or off equipment
- **Injury source:** MINE FLOOR,BOTTOM,FOOTWAL
- **Nature of injury:** FRACTURE,CHIP
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 3 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials, Inc.
- **Mine:** [1300014](https://api.ai-analytics.org/mine/1300014)
## Narrative

EE was moving catwalk from a 769D haul truck in the mine shop. Two bolts remained on the bottom and one on the top. The Ee removed the top bolt while standing with one leg on the catwalk. The bottom bolts popped out and the ee fell to the concrete floor striking his knee cap on the floor or the catwalk.

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