# HANDLING OF MATERIALS
> MSHA accident `220110700015` · 03/03/2011 · Wharf Resources (USA) Inc
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Fall to the walkway or working surface
- **Occupation:** Warehouseman, Bagger, Palletizer/Stacker, Store keeper, Packager, Fabricator, Cleaning plant operator
- **Activity:** Machine maintenance
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 68
- **Mine experience:** 2.38 years
## Operator
- **Controller:** Goldcorp Inc
- **Operator:** Wharf Resources (USA) Inc
- **Mine:** [3901282](https://api.ai-analytics.org/mine/3901282)
## Narrative

Operators were winterizing an eight inch poly line. Air was blown through the pipe and was exiting a 2"" valve on the other end. An operator ensured that all air had exited the 2"" valve. An operator disconnected a 4"" quick coupler and the air that was still in the pipe knocked the operator to the ground. The medical determination was a sprained MCL. The investigation is on going.

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