SURVEY © NERC 2008 A ll rights reserved T he fu ll range of Survey publications is available from t he BGS...Britain and Northern Ireland (the latter as an agency service for the government of Northern Ireland),...e-mail: bgslondon@bgs.ac.uk Geological Survey of Northern Ireland, Colby House, Stranmillis Court, Belfast...Estate Commissioners, The Crown Mineral Agent, the Northern Ireland Department of Enterprise, T rade and Investment...Photographer: Paul McDonnell Columbus House, Green meadow Springs, Tongwynlais, Cardiff, CF15 7NE -a 029 2052 1962 |