The Glamorgan-Gwent Archaeological Trust
Historic Environment Record

The following information has been provided under the terms and conditions of access as detailed on GGAT’s website  Copyright is reserved on all data supplied by the GGAT HER Charitable Trust. All output resulting from the use of the data must acknowledge the source as follows:-
Derived from information held by the GGAT HER Charitable Trust copyright.

The data below is intended to be used for information and research only and is not for use as part of a commercial project.  If you wish to use information derived from material held by the GGAT HER Charitable Trust for publication in printed or multimedia form or to compile resources for commercial use, prior permission must be obtained in writing. For further information or to arrange a visit to the Trust please send an enquiry form to


Primary Reference Number (PRN) : 03321g
Trust : Glamorgan Gwent
Community : Blaenavon
Unitary authority : Torfaen
NGR : SO24390899
Site Type (preferred type first) : Post-Medieval Colliery
Status : Scheduled Monument

Summary :
Engine Pit was the first shaft mine in the Blaenavon area, probably sunk around 1806 and certainly before 1812.

Description :
Engine Pit was the first shaft mine in the Blaenavon area, probably sunk around 1806 and certainly before 1812. By 1819 it had become significant as the drainage mechanism which permitted the use of water-balance operated coal and iron ore slopes and shafts throughout the area. A single unlined vertical shaft a second offset at the bottom as a drainage sump. This shaft was drained by a waterwheel and pump rods to a beam below the ground, shown on a section of 1824. Later, beam engines were installed both on the surface and at the top of the lower lift, the latter of which is believed to survive below ground. Photographs show the shaft in good condition in 1976. At the surface, there are upstanding retaining walls and foundations, cast iron pump pipes, and cast iron bed plates for an engine on carved sandstone corbels. There is considerable archaeological potential for study of the waterwheel and engine arrangements. An exceptionally large level lies in the bank above the shaft, and Enginepit row formerly lay immediately to the south-east. Of national importance as a historically significant early drainage shaft, with good documentation and high archaeological potential, associated with Blaenavon Ironworks.

Sources :

Events :

Related PRNs :

Compiled date : 03-01-1988

March 23, 2019, 8:32 pm - HTML file produced from GGAT HER Charitable Trust Ltd. Heathfield House, Heathfield, Swansea SA1 Tel. 01792 655208; Fax 01792 474469 website:  email: Registered Charity no. 505609
Data supplied by in partnership with Local Authorities, Cadw and the partners of ENDEX © GGAT HER Charitable Trust, 2019 (and in part © Crown, 2019).