# FALL OF ROOF OR BACK
> MSHA accident `220110060003` · 01/03/2011 · 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:** [1502263](https://api.ai-analytics.org/mine/1502263)
## Narrative

A roof fall occurred while retreat mining was taking place.  The fall was located just outby the MRS units on the 005 working section.  The fall was located inby crosscut # 54 in the #4 entry and measured 20' by 15' and was 5' in thickness.  No equipment or persons were involved.

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