. "Poynton Four Foot Coal"@en . "Black Mine Coal [Obsolete: use BMIC]"@en . . . "stable"@en . . . . "Coal."@en . "BMIC"@en . "318.0"^^ . "319.0"^^ . "Black Coal (South Lancashire)"@en . . . . . "Black Coal (South Lancashire)"@en . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en .