# FALL OF ROOF OR BACK
> MSHA accident `220113060018` · 10/25/2011 · Lone Mountain Processing LLC
## Details
- **Degree of injury:** ACCIDENT ONLY
- **Classification:** FALL OF ROOF OR BACK
- **Accident type:** Accident type, without injuries
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 0
- **Mine experience:** — years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Lone Mountain Processing LLC
- **Mine:** [1517234](https://api.ai-analytics.org/mine/1517234)
## Narrative

While retreat mining was being conducted in the #4 entry inby the 19th x-cut lithe 4 LT panel, a section of roof fell outby the MRS units.  The units were could not be moved outby because of the fall.  The fall measured 10' long by 18' wide and was 5' in thickness.  There were no injuries.

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