Global News BC: Residential school searches: What is ground-penetrating radar? https://globalnews.ca/news/9942656/residential-schools-ground-penetrating-radar/ #globalnews #britishcolumbia #news #IndianResidentialSchools #groundpenetratingradar #ResidentialSchools #Potentialgraves #unmarkedgraves #Burialsites #Reflections #Canada