# FALLING/SLIDING/ROLLING MATERIALS
> MSHA accident `220171010007` · 03/30/2017 · Martin Marietta Materials Inc
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** FALLING/SLIDING/ROLLING MATERIALS
- **Accident type:** Struck by falling object
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Machine maintenance
- **Injury source:** BROKEN ROCK,COAL,ORE,WSTE
- **Nature of injury:** CUT,LACER,PUNCT-OPN WOUND
- **Body part:** HEAD,NEC
- **Days lost:** 0
- **Mine experience:** 0.31 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials Inc
- **Mine:** [0901035](https://api.ai-analytics.org/mine/0901035)
## Narrative

While employees were clearing out crusher, an employee was reaching over the rubber ring surrounding the crusher with a rod in their hand, and their head was looking over the rubber. A couple of rocks fell from somewhere above, hit the hard hat, knocked it off, and struck the employee in the back of the head.

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