Great Western Railway

The railway company bought the Gyfeillion colliery outright from John Calvert in 1854 after a three-month trial, having been its largest customer, and worked it directly and profitably until putting it up for sale in 1864 as part of a wider disposal of non-railway assets.

Mines operated

Mine	Region	Years
Great Western Colliery	Rhondda Cynon Taf	1854–1865

Record created: 3 September 2026 · Last researched: 3 September 2026