MineArchiveCwmorthin Back Vein collapse
| Date | 1884 |
|---|---|
| Mine | Cwmorthin Slate Mine |
| Region | Gwynedd |
| Type | Collapse / Roof Fall |
| Context | During active mining |
| Status | Researched |
A catastrophic collapse in the Back Vein roughly halved production and made about half the workings inaccessible, eventually forcing the operating company into liquidation.
What happened
In 1884, a catastrophic collapse in Cwmorthin's Back Vein roughly halved production and made about half the workings inaccessible. Casualty figures are not established by the sources consulted here. The operating company struggled on for several years afterwards before being forced into liquidation by 1888.
Recorded claims
Individual factual claims, each attached to the source(s) that support it below. Where sources disagree, both are kept.
- A catastrophic collapse in the Back Vein in 1884 roughly halved production and made about half the workings inaccessible, forcing the operating company into liquidation by 1888. 1
Sources
- (secondary) Cwmorthin quarry — Wikipedia
Record created: 20 August 2026 · Last researched: 20 August 2026