# SLIP OR FALL OF PERSON
> MSHA accident `220120240021` · 01/23/2012 · Imerys Filtration Minerals, Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall from machine
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Hand tools (not powered)
- **Injury source:** CEMENT PROD,CONCRET BLOCK
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 6.44 years
## Operator
- **Controller:** Imerys S A
- **Operator:** Imerys Filtration Minerals, Inc.
- **Mine:** [4503480](https://api.ai-analytics.org/mine/4503480)
## Narrative

Employee was tightening a bolt on a apron cylinder on a Cat 631 Scraper.  This is a 5' cylinder.  As the employee was pulling the wrench towards himself the 'bite' of the wrench slipped on the bolt, causing employee to fall backward about 5' onto the edge of an ecology (cement) block.

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