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    NPRN33573
    Map ReferenceSO10SE
    Grid ReferenceSO1670002000
    Unitary (Local) AuthorityCaerphilly
    Old CountyMonmouthshire
    CommunityArgoed
    Type Of SiteCOAL MINE
    PeriodPost Medieval
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    Description
    Markham Colliery was opened by the Markham Steam Coal Company, a subsidiary of Tredegar Iron and Coal Company, in 1913. The colliery ceased production and was closed in 1986.