ThyssenKrupp has announced that its subsidiary ThyssenKrupp Nirosta took part in three major projects that were recently completed in the US: a tower in Portland and two skyscrapers in Chicago. The company manufactured the material for the stainless steel elements which were then processed by Germany-based Christian Pohl GmbH and delivered to North America. The ‘Blue Cross-Blue Shield Tower’ project in Chicago involved adding further stories to the existing building and some 22 metric tons of stainless steel were used for the 226m, 54-storey office tower. Roughly 24 metric tons of linen-finish stainless steel were used to clad column elements in the 195m, 45-storey building on North Wacker Drive in downtown Chicago. The 81m residential tower in Portland, Oregon features facade panels of stainless steel. ThyssenKrupp Nirosta supplied some 36 metric tons of Nirosta 4401 stainless steel for the exterior of the building.