You could try the Flin Flon Daily Reminder for their online archives. www.ffdailyreminder.com
I'm not sure how far their archives go back, though. Might have also been published in the Winnipeg Free Press. Their archives are also online. And you could try Dadson's Funeral Home. They'll usually tell you when a local death took place and where the person is buried in Flin Flon. Their toll free phone number is 1-877-460-2444. Hope that helps.