OPWA Member Advisory
2012 OPWA Ski & Snowboard Day
OPWA 2011 Winter Newsletter
AORS 2012 Training
2011 Fall Workshop Presentations
OCSI Press Release 
OPWA 2011 Summer Newsletter
OPWA White Paper


 News Archive 

2011 Spring Workshop Presentations

Mystery Photo answers: 

• It is Big Becky, the tunnel boring machine used for the Niagara Tunnel project to drill a hydroelectric tunnel beneath Niagara Falls
• Named Big Becky in reference to the Sir Adam Beck hydroelectric dams to which it was tunnelling
• The machine weighs 4000 tonnes
• It has a 14 meter cutting head
• It went through 1.6 million cubic meters of rock
• The tunnel is 10.2 km long
• The tunnelling started in 2006 and was finished in 2011 with work still being done in the tunnel

APWA International Congress and Exposition Toronto 2014

"The Best Show in Public Works"