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Site Details

© Copyright and database right 2020. All rights reserved. Ordnance Survey licence number 0100022206

NPRN 85490

Map Reference SH77NW

Grid Reference SH705755

Unitary (Local) Authority Conwy

Old County Caernarfonshire

Community Penmaenmawr

Type of Site QUARRY


Period 19th Century, Post Medieval

Site Description The Penmaenmawr Granite Quarry is an extensive one that is still operational. The quarry was formed from an amalgamation of several workings originally dating from 1830. Some of the counterbalance incline systems remained in use until 1967, and with the Pencoed storage bins and clock face in the Graiglwyd workings, they can be seen from the main road. The stone was originally quarried for setts, although from 1896 the quarries produced crushed roadstone and railway ballast. There was little sett making after the 1930s. The damaged structure of the Penmaen crushing mill, or Bonc Jolly, dates from 1893 and it consists of a series of stone or brick bases. There are also remaining drum houses and dressing sheds.

Source: David Gwyn & Merfyn Williams (1996) ‘A Guide to the Industrial Archaeology of North West Wales’. Association for Industrial Archaeology

RCAHMW, 14 November 2011.

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Archive Records