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    Halkyn Deep Level Tunnel

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    NPRN33942
    Map ReferenceSJ27SW
    Grid ReferenceSJ2300071100
    Unitary (Local) AuthorityFlintshire
    Old CountyFlintshire
    CommunityFlint
    Type Of SiteMINE
    Period19th Century
    Description
    The Halkyn Deep Level mine was drained by the Halkyn Deep Level Tunnel on which a day level was begun in 1818 and driven in from a stream at Bryn-moel, about 150yds below Nant Mill.