Full Details
- Surname
- JEFFRIES
- Forename
- John (injured)
- Day
- 20
- Month
- 07
- Year
- 1911
- Age
- 16
- Occupation
- Collier
- Mine/Quarry Name
- Dulais
- Mineral Worked
- Coal
- Owner
- Dulais Anthracite Collieries Co. Ltd
- Location
- Onllwyn
- County
- Breconshire
- Details of Event
- Explosion of firedamp. 3 injured.
