Unionized workers at Imperial Metals Corp.'s Mount Polley copper-gold mine in British Columbia downed tools following a three-hour lockout by the company on May 23.
The lockout sought to break a deadlock on talks about the renewal of a collective agreement that was terminated at the end of 2017, according to a same-day release.
Employees were invited to return to work after the lockout under the terms of a new and competitive wage and benefits package with USW Local 1-2017, the company said. Efforts to renew the agreement via mediation have been unproductive so far.
