http://inspire.ec.europa.eu/codelist/EndusePotentialValue/engineeringClayINSPIRE Registry teamJRC-INSPIRE-SUPPORT@ec.europa.euhttp://inspire.ec.europa.eu/registry2015-08-18 18:12 PM CEST2015-08-18 18:12 PM CESTengineering clayClay or shale with particular properties, used for a civil engineering purpose other than as a fill, e.g. liner for landfill, flood defence