# HANDLING OF MATERIALS
> MSHA accident `220180610012` · 02/19/2018 · Heidelberg Materials Midwest Agg, Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Struck by falling object
- **Occupation:** Miner, Prospector, NEC
- **Activity:** Handling supplies or material
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.46 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Heidelberg Materials Midwest Agg, Inc.
- **Mine:** [1201150](https://api.ai-analytics.org/mine/1201150)
## Narrative

Crane was holding the lock post cylinder 8""-10"" above the platform as the emp was kneeling beside it EE was hitting the lock post cylinder rod trying to extend it out when the snap ring holding the top cap in place came out and allowed the cylinder body to come loose, hit the platform and fall onto the emp knee.

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