# HANDLING OF MATERIALS
> MSHA accident `220261760022` · 06/22/2026 · CalPortland
## Details
- **Degree of injury:** INJURIES DUE TO NATURAL CAUSES
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion in lifting objects
- **Occupation:** Water truck operator
- **Activity:** Handling supplies or material
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 7.25 years
## Operator
- **Controller:** Taiheiyo Cement Corp
- **Operator:** CalPortland
- **Mine:** [0400011](https://api.morvs.ai/mine/0400011)
## Narrative

Employee 1 and Employee 2 were manually moving a stacker base approximately five feet.  During the movement, one adjusted their body position and footing. While twisting and repositioning, they experienced pain in left knee.  The employees safely set the stacker base down and stopped work.

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