One such dispute is the strike at three mine sites of the Potash Corporation of Saskatchewan where close to 500 United Steelworker members have been on strike for a fair collective agreement since August 7, 2008.
You can follow the dispute at a couple web-sites:
At a local steelworker web-site set up at: http://www.potashworkers.com/
and at the USW Canada national web-site.
As well, check out the video below of Saskatchewan Steelworkers who recently participated in a protest in London, England were the PCS was holding a London Analysts Meeting: