update: The Calgary Sun
The demonstration was in response to an Alberta Labour Relations Board motion ordering union workers to "cease and desist" such pickets.
Journeyman millwright Stephen Anderson said unions have "gone through all the legal channels but Alberta's labour laws are slanted against us." Millwrights have agreed to a contract, but Anderson said many union members didn't agree with its ratification.
"This is all about antiquated labour laws favouring big oil, and making it nearly impossible for us to strike," he said.
Similar "information pickets" in Fort McMurray have cost at least 200 scaffolders their jobs at the Canadian Natural Resources Ltd. Horizon oilsands project, said Alberta Federation of Labour president Gil McGowan.
CNRL could not be reached for comment.