# OTHER
> MSHA accident `220181380025` · 05/15/2018 · U.S. Silica
## Details
- **Degree of injury:** INJURIES DUE TO NATURAL CAUSES
- **Classification:** OTHER
- **Accident type:** NEC
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Front-end loader
- **Injury source:** MISCELLANEOUS,NEC
- **Nature of injury:** HEART ATTACK
- **Body part:** BODY SYSTEMS
- **Days lost:** 3
- **Mine experience:** 0.42 years
## Operator
- **Controller:** USS Holdings Inc
- **Operator:** U.S. Silica
- **Mine:** [4105331](https://api.ai-analytics.org/mine/4105331)
## Narrative

Employee was originally thought to have suffered from heat stress; however later it was found to have been caused by a personal medical condition.

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