# MACHINERY
> MSHA accident `220131570017` · 05/29/2013 · Lafarge North America Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck against a moving object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Surface equipment, NEC
- **Injury source:** SURFACE MINING MACHINES
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 33.13 years
## Operator
- **Controller:** Lafarge S A
- **Operator:** Lafarge North America Inc.
- **Mine:** [2000051](https://api.ai-analytics.org/mine/2000051)
## Narrative

Back strain while operating drill. Sitting in twisted position for 2 hrs - didn't realize seat swiveled. Found release knob on side of seat & rest of shift the seat swiveled. However, some back discomfort at end of shift. 2 days later, he reported increased back pain, sought medical attn & was prescribed a Rx & light duty.

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