"Bulman Main Coal (Northumberland)"@en . . "337.0"^^ . "BULMA"@en . . . . . "Cancer Coal"@en . "Bulman Main Coal (Northumberland)"@en . "stable"@en . . "Coal."@en . . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Asbian Substage (Carboniferous Period) (337-330.9 Ma BP)."@en . "330.9"^^ .