'To mourn and move forward,' potential residential school grave sites in Sask. must be investigated: FSIN chief The FSIN says sites including the Muskowekwan IRS, Onion Lake St. Anthony's IRS, Beauval IRS, Guy Hill IRS, Lebret IRS and Sturgeon Landing IRS have potential mass graves. Author of the article: Dave Deibert • Saskatoon StarPhoenix Publishing date: May 31, 2021 • 25 minutes ago • 4 minute read • Shoes are laid around the Centennial Flame on Parliament Hill in Ottawa in memory of the 215 children whose remains were found at the grounds of the former ...