cwmbwergwm
Industrial Wales - Monmouthshire's Eastern Valley
The Glyn Pits
A unique site dating from 1845
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The Industrial Archaeology and History of Pontypool and Pontnewynydd

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Quick links to :-     Glyn Pits     Glyn Quarry and Quarry Level     Glyn levels and Glyntillery Colliery     Hafodyrynys and the Northern Valley
Pontypool, Panteg to Pontnewynydd     Blaendare, Upper and Lower Race
The Cwm Ffrwd-oer Valley to Tirpentws     The Cwm Nant Ddu Valley to Blaenserchan

The vertical Winding Engine House

A visit by Risca Museum allowed entry to the engine house and a closer look at other areas of the pit.

Underneath the vertical Winding Engine House

The upcast shaft and fan drift

The Beam Engine


The Glyn Pits

The Glyn Pits are shown on the 1881 OS map as Race Colliery and were also known as Cwm-y-Glyn Colliery. Glyn Pits Nos 3 and 4 were to the Northeast, down by the GWR line, appearing on the 1898 map.

Quick links to :-     Glyn Pits     Glyn Quarry and Quarry Level     Glyn levels and Glyntillery Colliery     Hafodyrynys and the Northern Valley
Pontypool, Panteg to Pontnewynydd     Blaendare, Upper and Lower Race
The Cwm Ffrwd-oer Valley to Tirpentws     The Cwm Nant Ddu Valley to Blaenserchan

The background of Glyn Pits

The Glyn Pits complex consisted of three sites, Glyn Pits nos 1 and 2, Glyn Pits nos 3 and 4 and the Balance Pit

Glyn Pits Nos 1 and 2 - ST 2656 9984

Glyn Pits Nos 1 and 2 are shown on the 1881 OS map as Race Colliery and were also known as Cwm-y-Glyn Colliery.

The vertical engine and winding house

The vertical engine and winding house were built around 1865

Upcast Shaft and Fan Drift



The Beam Engine



The Colliery reservoir



The Balance Pit - ST 2727 9994

The Balance Pit was sunk in 1832, consisting of two oval shafts of 25 ft by 9 ft and 88 yds deep with three reservoirs supplying the water for the balance. Its operation was similar to the Cwmbergwm example but the retarding system was by means of a hydraulic cylinder rather than a conventional brake. The Balance Pit and House are shown on the 1880 and 1901 maps but the Balance Pit is marked 'disused' by 1920 and the site virtually cleared. Balance House is still shown on 1the 1964 map.
Balance House was possibly the Balance Pit overseer's house. Christine Peploe remembers "I was born in Balance House but I had not seen an actual photograph of the property. I only had my very vivid memories of living there as a child. My Grandfather David Reece bought Balance House from the Crumlin Valley Colleries Limited for £23.00 in 1928".

Glyn Pits Leat - ST 2618 9973


Acknowledgments, sources and further reading.

Thanks to Clive Davies and Christine Peploe for their photos and information
'The Surviving Engines of the Glyn Pits' by Gwyn Tilley, Landmark Publishing, 2005


A Guide to the Website


All rights reserved - Phil Jenkins