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Latitude: 53.0492 / 53°2'57"N
Longitude: -4.2406 / 4°14'26"W
OS Eastings: 249903
OS Northings: 352564
OS Grid: SH499525
Mapcode National: GBR 5K.CVS2
Mapcode Global: WH43T.TMT8
Entry Name: Ty Mawr East Slate Quarry Winding Engine House
Scheduled Date: 30 July 1998
Source: Cadw
Source ID: 1053
Cadw Legacy ID: CN300
Schedule Class: Industrial
Category: Engine house
Period: Post Medieval/Modern
County: Gwynedd
Community: Llanllyfni
Traditional County: Caernarfonshire