"Coal."@en . . "Dunsil Coal (West And South Yorkshire, Nottingham And Derby)"@en . . "Dunsil Coal (West And South Yorkshire, Nottingham And Derby)"@en . . "DSLC"@en . . . "stable"@en . "318.0"^^ . "314.75"^^ . . . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage (Carboniferous Period) (318-314.75 Ma BP)."@en . . "Beck Bottom Stone Coal (West Yorkshire)"@en .