# HANDLING OF MATERIALS
> MSHA accident `220122840029` · 10/03/2012 · Martin Marietta Materials
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Struck by... NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Getting on or off equipment
- **Injury source:** METAL COVERS & GUARDS
- **Nature of injury:** FRACTURE,CHIP
- **Body part:** FINGER(S)/THUMB
- **Days lost:** 0
- **Mine experience:** 14.79 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials
- **Mine:** [0103022](https://api.ai-analytics.org/mine/0103022)
## Narrative

Employee was working on the tramp system jacks on the RC60 cone.  He relieved the oil pressure off the system.  Employee was getting out of the opening beside the crusher.  The jack blew out from the bottom.  The piston from the jack hit his left hand.  Catching his hand between the piston & the bonnet support.

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