# SLIP OR FALL OF PERSON
> MSHA accident `220112570009` · 09/06/2011 · Hanson Material Service
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Blaster, Shooter, Shotfirer, Explosive worker, Powder gang/monkey
- **Activity:** Getting on or off equipment
- **Injury source:** SURFACE MINING MACHINES
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 22 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Hanson Material Service
- **Mine:** [1100024](https://api.ai-analytics.org/mine/1100024)
## Narrative

A blaster strained his left knee while mounting a Komatsu PL400 Excavator. The injured employee placed his right foot on the step and his left on the track. When he shifted his weight to his left foot, his foot went between the pads and he twisted his left knee. The injured miner did not request medical treatment until September 8, 2011.

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