. . . "OILSHW"@en . "Oil shale waste"@en . "Oil shale waste"@en . "stable"@en . "Oil shale waste - A type of artifical deposit. It consists of waste products from the mining of dark grey or black shale containing organic substances that yield liquid hydrocarbons on distillation. British Geological Survey Research Report RR/99/04, appendix 1."@en . .