# HANDLING OF MATERIALS
> MSHA accident `220201480015` · 05/22/2020 · Robertson's
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** METAL COVERS & GUARDS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 2 years
## Operator
- **Controller:** RRM Development Corporation; Mitsubishi Corp
- **Operator:** Robertson's
- **Mine:** [0404803](https://api.ai-analytics.org/mine/0404803)
## Narrative

Employee stated through the course of duties changing screens on a shaker deck on 5/22/2020 that employee's knee tightened up. Employee thought it would be fine, but 5-hours into the shift on 5/23/2020 employee reported the injury.

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