The successful contractors for the Spire of Dublin in O’Connell Street are SIAC and Radley Engineering. Both are Irish companies, and were successful against strong tender submissions from companies and other joint ventures in mainland Europe and the UK. SIAC is managing the joint venture and undertaking the site groundworks and services installations. Radley Engineering based in Dungarven, Co. Waterford in Southern Ireland, promotes itself as Ireland’s foremost engineering company specialising in quality stainless steel fabrications including pressure vessels, reactors, heat exchangers, and storage tanks in a variety of materials including titanium and 316L stainless steel. 316L is the specified alloy for the Spire. The stainless steel plate in thicknesses from 10 to 35mm is being produced and polished in France, rolled in Scotland, and all the workshop fabrication of the Spire carried out by Radley.