Ancient Monuments

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Genwen Engine House

A Scheduled Monument in Llanelli Rural (Llanelli Wledig), Carmarthenshire (Sir Gaerfyrddin)

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Latitude: 51.6761 / 51°40'33"N

Longitude: -4.1046 / 4°6'16"W

OS Eastings: 254574

OS Northings: 199575

OS Grid: SS545995

Mapcode National: GBR GT.TKC9

Mapcode Global: VH4K0.S4XG

Entry Name: Genwen Engine House

Scheduled Date: 2 March 1993

Source: Cadw

Source ID: 2824

Cadw Legacy ID: CM263

Schedule Class: Industrial

Category: Engine house

Period: Post Medieval/Modern

County: Carmarthenshire (Sir Gaerfyrddin)

Community: Llanelli Rural (Llanelli Wledig)

Built-Up Area: Llanelli

Traditional County: Carmarthenshire


The monument consists of a colliery engine house and other associated features relating to the operation of the Genwen colliery. The engine house contained a 52 inch cylinder beam engine made by Boulton and Watt and had replaced an earlier building of 1766 of Chauncey Townsend’s which had operated a Newcomen engine. The engine house was altered in 1837 when a larger engine was installed. Although closed between c1867 and 1898, the pit later re-opened and continued in use until 1907 when a gas explosion caused it to close. Pumping ceased in 1908 after which the colliery flooded out. The pumping shaft was immediately to the north of the building, and a winding shaft lay some 20m to the west. An adit opened in the 1830’s lies just to the west.

The monument is of national importance for its potential to enhance our knowledge of mining in Wales. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. In particular the fabric of the engine house reflects the development of steam engines on this site over a long period of time. An engine house may be part of a larger cluster of industrial monuments and their importance can further enhanced by their group value.

The scheduled area is a square 30m by 30m around the centre of the engine house comprising the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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