http://www.isee.org/
February 12, 2012 - February 15, 2012 | Gaylord Opryland Resort and Convention Center | Nashville | Tennessee | United States (USA)
The 38th annual gathering of blasters, manufacturers, government officials and suppliers from all over the world.

March 11, 2012 - March 14, 2012 | Charlotte | North Carolina | United States (USA)
Held in conjunction with the AGG1 Forum & Expo.

http://www.agg1.org/
March 13, 2012 - March 15, 2012 | Charlotte Convention Center | Charlotte | North Carolina | United States (USA)
Focusing exclusively on the aggregates industry.

http://www.cim.org/edmonton2012/
May 3, 2012 - May 9, 2012 | Shaw Conference Center | Edmonton | Alberta | Canada
The theme of the Canadian Institute of Mining, Metallurgy and Petroleum 2012 Conference & Exhibition is "Minerals for all Seasons."

http://www.hillhead.com/
June 19, 2012 - June 21, 2012 | Hillhead Quarry | Buxton | United Kingdom (UK)
The biennial showcase event for the quarrying, recycling and heavy construction industries.