March 22, 2005 A geochemical investigation in the influence of coal rank around the likely environmental consequences of CO2 sequestration in deep coal beds Coal samples of various rank ended up extracted from the laboratory with supercritical CO2 To judge the opportunity for mobilizing hydrocarbons for the duration of CO2 https://www.generationgenius.com/videolessons/rocks-and-minerals-video-for-kids/