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Cof Cymru: National Historic Assets of Wales · Wales

Cornish Type Engine House, Bryngwyn Colliery

Bedwas, Trethomas and Machen, Caerphilly, Wales

The record

Designation
Scheduled monument
Site type
Engine House
Period
Post Medieval/Modern
Date of designation
19 April 1989
Community
Bedwas, Trethomas and Machen
Unitary authority
Caerphilly
Country
Wales
Coordinates (centre of the scheduled area)
51.59621, -3.21113
SAM number
GM440
Cadw record number
2913

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1588 "Ortelius, Abraham: Theatro De La Tierra Universal. 0" (Bayerische Staatsbibliothek, Munich).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Ancient Monument.

The monument consists of the remains of an engine house dating to c. 1868. The engine house is three storeys tall and square of the Cornish type. Little is known about its history, however it is believed to have held an inverted Cornish Engine, which would be an unusual, perhaps unique feature. It ceased work in c. 1903.

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. The structure itself may be expected to contain archaeological information concerning chronology and building techniques. 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 comprises the remains described and areas around them within which related evidence may be expected to survive.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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