The German Ducon (steel) micro-reinforced concrete system now has a US agent in Excend, Inc., a Woodcliff Lake NJ firm owned by HOCHTIEF AG. There's an article in the Jan 08 Automated Builder Magazine [ www.automatedbuilder.com ] For Excend see [ http://www.excendinc.com/page.cfm?category=1 ]. Rudy Berg