Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

St David's Colliery

A Scheduled Monument in Llangennech, Carmarthenshire (Sir Gaerfyrddin)

We don't have any photos of this monument yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 51.6917 / 51°41'30"N

Longitude: -4.1145 / 4°6'52"W

OS Eastings: 253941

OS Northings: 201336

OS Grid: SN539013

Mapcode National: GBR GT.SGSP

Mapcode Global: VH4JT.MQPZ

Entry Name: St David's Colliery

Scheduled Date: 28 July 1994

Source: Cadw

Source ID: 2825

Cadw Legacy ID: CM265

Schedule Class: Industrial

Category: Coal Mine

Period: Post Medieval/Modern

County: Carmarthenshire (Sir Gaerfyrddin)

Community: Llangennech

Traditional County: Carmarthenshire


The monument consists of a coal mine, dating to the 19th century. The colliery was sunk by the Llangenech Coal Co. from 1825. It was the deepest mine in the South Wales Coal field. It became the nodal centre for a number of associated pits linked by horse-drawn railways exploiting the construction by the Company of the Llanelli Railway in 1833 to the New Dock at Llanelli. The remains include the substantial buttressed walls of a stone pumping engine house, the heapstead, several other low stone walls remaining from ancillary buildings and engine houses, and the massive steam-powered incline house for a railway incline to Penprys Colliery.

The monument is of national importance for its potential to enhance and illustrate our knowledge and understanding of the development of the coalmining industry in Wales. It retains significant archaeological potential, with the strong possibility of the presence of associated archaeological features and deposits. A caol mine may be part of a larger cluster of industrial monuments and their importance can further enhanced by their group value.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive. It measures 90m x 30m.

Source: Cadw

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.