# IGNITION OR EXPLOSION OF GAS OR DUST
> MSHA accident `220041880062` · 06/23/2004 · CalPortland
## Details
- **Degree of injury:** ACCIDENT ONLY
- **Classification:** IGNITION OR EXPLOSION OF GAS OR DUST
- **Accident type:** Accident type, without injuries
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 0
- **Mine experience:** — years
## Operator
- **Controller:** Taiheiyo Cement Corp
- **Operator:** CalPortland
- **Mine:** [0400037](https://api.ai-analytics.org/mine/0400037)
## Narrative

IT APPEARS THAT ONE OF THE #1 COAL MILL ROLLS LOST THE OIL THAT LUBRICATES IT. THIS ALLOWED THE ROLL TO BECOME VERY HOT WHICH THEN PROVIDED AN IGNITION SOURCE FOR THE GROUND COAL. THE IGNITION OF COAL CAUSED THE RUPTURE DISCS IN THE COAL MILL DUST COLLECTOR TO BLOW OUT AS THEY WERE DESIGNED TO DO.

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