"298.9"^^ . . . "Coal."@en . . "359.3"^^ . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Carboniferous Period (359.3-298.9 Ma BP)."@en . "Fork Vein Coal (South Wales)"@en . "FKVC"@en . . . . "Fork Vein Coal (South Wales)"@en . "stable"@en . .