# MACHINERY
> MSHA accident `220131440050` · 05/23/2013 · Ash Grove Cement Company
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by falling object
- **Occupation:** Crane operator, Mobile equipment operator (MEO), Dragline operator, Dropball operator, Rigger
- **Activity:** Machine maintenance
- **Injury source:** CRANES,DERRICKS
- **Nature of injury:** UNCLASSIFIED,NOT DETERMED
- **Body part:** MULTIPLE PARTS (MORE THAN ONE MAJOR)
- **Days lost:** 17
- **Mine experience:** 0.31 years
## Operator
- **Controller:** Ash Grove Cement Company
- **Operator:** Ash Grove Cement Company
- **Mine:** [4100026](https://api.ai-analytics.org/mine/4100026)
## Narrative

The operator & 2 helpers were attaching the jib to the boom of a 90 ton hydraulic crane.  The operator removed the pin on the side of the boom before he installed the 2 pins that hold the jib in place. This caused the entire jib to drop to the ground. One side of the jib struck the operator's hard hat as it fell to the concrete paving.

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