On June 20, 1984, a seismic event measuring 3.5 on the Richter scale struck Falconbridge Mine, leading to the deaths of four miners — Sulo Korpela, Richard Chenier, Daniel Lavallee and Wayne St. Michel.
Every year since the tragedy, Mine Mill Local 598/Unifor has held a Workers' Memorial Day gathering on June 20.
This year's service takes place starting at 9:30 a.m. Wednesday morning at the union's campground on Richard Lake.
Although specifically commemorating the 1984 Falconbridge mining disaster, the event also remembers other workers who have died at the company, which, as a result of several buyouts, now goes by the name Glencore.