Magnet Fishermen Find Explosive in Michigan River I don't know much (or anything) about magnet fishing but if it involves possibly finding explosives, sign me up. A group of local magnet fishermen were fishing for what they call "rustic treasures" in the Grand River in Grand Rapids. While fishing, they pulled up a first-ever find for the group. According to WoodTV, Ryan McCollum said he was magnet fishing off the Sixth Street Bridge in Grand Rapids Saturday with his 8-year-old son Lochlan and cousin Chris Hample. That’s when Hample pulled up a 2-foot-long artillery shell. Get our free mobile app