# FALL OF ROOF OR BACK
> MSHA accident `220023190030` · 10/28/2002 · Hanson Aggregates BMC, Inc
## 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:** USS Holdings Inc
- **Operator:** Hanson Aggregates BMC, Inc
- **Mine:** [3600131](https://api.ai-analytics.org/mine/3600131)
## Narrative

ROOF WAS BOLTED WITH SPLIT SET BOLTS BECAUSE OF A HOLLOW SOUND. MONTHS LATER IT MUST OF SEPERATED CAUSING EXCESSIVE LOAD FOR THIS STYLE AND NUMBER OF BOLTS. THIS FALL HAS BEEN CHECKED BY BOTH MSHA AND MSHA TECH SUPPORT. TWO BOOM JUMBO DRILL WAS HEAVILY DAMAGED.

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