William Hansmire, Senior Vice President Geotechnical and Tunneling Parsons Brinckerhoff; Erika Moonin, SWA; Art Silber, President Underground Construction; Mike Rispin, President Marketing, ITA; Verya Nasri SAS Chief Tunneling Engenieer Aecom; Han Admiraal Presidet ITA Espacios Subterráneos; Soren Eskesen Presidente ITA; Tarsicio Celestino, Brasil.
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