# POWERED HAULAGE
> MSHA accident `220030070043` · 12/30/2002 · Martin Marietta Aggregates Of Southern Iowa Inc
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** POWERED HAULAGE
- **Accident type:** Caught in, under or between a moving and a stationary object
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Machine maintenance
- **Injury source:** UNDERGRD MINING MACHINES
- **Nature of injury:** MULTIPLE INJURIES
- **Body part:** UPPER EXTREMITIES, MULTIPLE
- **Days lost:** 1
- **Mine experience:** 10.84 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Aggregates Of Southern Iowa Inc
- **Mine:** [1301225](https://api.ai-analytics.org/mine/1301225)
## Narrative

EE'S WERE LIFTING A BAR TO BE INSTALLED INTO THEPRIMARY CRUSHER UNDERGROUND USING A CHAIN AND THE SCALER. THE SCALER OPERATOR WAS INSTRUCTED TO BOOM DOWN TO CREATE MORE SLACK IN THE CHAIN ALLO WING THE CHAIN TO BE TIGHTENED SLIGHTLY AROUND THE BAR. THE SCALER HAS A FLOATATION VALVE THAT RELEASED BELOW A CERTAIN ELEVATION ALLOWING BOOMTO GO TO FLOOR. CAUGHT EE HAND BETWEEN BAR& BOOM

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