The International Tunnelling and Underground Space Association held its fortieth meeting in Iguassu Falls, Brazil, from 9 to 14 May 2014, in conjunction with the World Tunnel Congress 2014 "Tunnels for a better life" organized by ITA and the Brazilian Tunnelling Committee.  More than1500 persons participated in the Congress. 52 of the 71 Member Nations participated or were represented in the General Assembly.