# MACHINERY
> MSHA accident `220121660020` · 06/07/2012 · Black Hawk Mining LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck against a moving object
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Bulldozer
- **Injury source:** SURFACE MINING MACHINES
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 264
- **Mine experience:** 1.06 years
## Operator
- **Controller:** Thomas A  Potter; John M  Potter
- **Operator:** Black Hawk Mining LLC
- **Mine:** [1515978](https://api.ai-analytics.org/mine/1515978)
## Narrative

Operator backed a dozer into an uncovered voided area sliding the dozer backwards. Neither operator nor equipment became engulfed by coal.

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