# FALL OF ROOF OR BACK
> MSHA accident `220100410003` · 02/06/2010 · 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 was discovered on this date.  The fall was located on MMU-005 in the #3 entry at break #49.  The fall measured 20' by 20' and was 8' in thickness.  The area was previously supported with 5' Hy-Tech Bolts and 12' Superbolts.  The fall occurred during an idle shift, with no personnel present.

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