0 Aberafan sample assessment for 2003-W34 Aberafan sample assessment for 2006-W29 Aberafan sample assessment for 2007-W31 Aberafan sample assessment for 2010-W33 Aberdyfi sample assessment for 2005-W37 Aberdyfi sample assessment for 2009-W26 Aberffraw sample assessment for 2003-W37 Aberffraw sample assessment for 2005-W21 Aberffraw sample assessment for 2009-W33 Aberffraw sample assessment for 2011-W31 10 1