March 20 - 22, 2012

3? Congresso Brasileiro de T?neis e Estruturas Subterr?neas

S?o Paulo, Brazil

May 18 - 23, 2012

WTC 2012 (World Tunnelling Conference)
Bangkok, Thailand

June 24 - 27, 2012
NAT 2012 (North American Tunneling)

Indianapolis, USA

October 16 -18, 2012

CityBuild 2012

Moscow, Russia

October 17 - 20

TAC Conference (Tunnelling Association of Canada)

Montr?al, Qu?bec Canada