# HANDLING OF MATERIALS
> MSHA accident `220073120005` · 11/01/2007 · Martin Marietta Materials, Inc.
## 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:** SCAFFOLDS,STAGING,ETC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 7 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials, Inc.
- **Mine:** [1301225](https://api.ai-analytics.org/mine/1301225)
## Narrative

Contractor was repairing torque converter output seal, laying on right side platform with his legs extended over the platform. He used his abdomen muscles to arch up to reach back for a wrench and popping noise occurred in right knee.  He climbed off machine and walked around trying to stretch and maneuver his knee.  That is when the real pain started.

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