# FALL OF ROOF OR BACK
> MSHA accident `220152650013` · 09/21/2015 · 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:** —
- **Mine experience:** — years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Lone Mountain Processing LLC
- **Mine:** [1517234](https://api.ai-analytics.org/mine/1517234)
## Narrative

A roof fall has occurred in the 13-Left Panel off B-Mains.  The fall was located between the #10 and #11 crosscuts in the #4 entry.  The fall measured 40' by 18' and was 8' in thickness.  The area was originally supported with 6' torque tension bolts with supplemental 12' cable bolts.  There were no injuries and ventilation was not affected.

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