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Onllwyn Colliery, Coal Level 3
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NPRN
80155
Map Reference
SN81SW
Grid Reference
SN8388010030
Unitary (Local) Authority
Neath Port Talbot
Old County
Glamorgan
Community
Onllwyn
Type Of Site
COAL MINE
Period
Post Medieval
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Description
Nineteenth-century coal mining tunnel shown on the first edition 1:2,500 Ordnance Survey map.