Summary of Results:
The survey has located seventy-three areas of disturbed soil most likely to be associated with unmarked grave shafts and/or funerary burial urns.(P.25)
The above link goes to a article in the Canadian Globe and Mail that explains how Ground Penetrating Radar (GPR) works.
It was published in June 2021 when the shock discovery of 215 children’s remains at Kamloops residential school was made. It was ‘stark example of violence’ inflicted upon Indigenous peoples.