# MACHINERY
> MSHA accident `220160950002` · 03/29/2016 · Martin Marietta Materials Southwest LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** MACHINERY
- **Accident type:** Caught in, under or between running or meshing objects
- **Occupation:** Outside foreman, Leadman
- **Activity:** Hand tools (powered)
- **Injury source:** HAND TOOLS,POWERED,NEC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** HAND (NOT WRIST OR FINGERS)
- **Days lost:** 0
- **Mine experience:** 6 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials Southwest LLC
- **Mine:** [4101335](https://api.ai-analytics.org/mine/4101335)
## Narrative

EE was at a Martin Marietta (customer) job site and was using a customer provided 1"" drive impact wrench to loosen/tighten bolts while changing out blow bars on a crusher. Protruding pin from impact wrench extension caught EE's glove & twisted EE's R hand, bending thumb way back. EE sustained strain to hand, causing soft tissue/ligament damage/swelling. MRI ordered.

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