He contacted the maker of the balls, Brunswick Bowling Products, which had a plant in the area and said they were made in the 1950s. He said former employees contacted him and told him the workers used to take scrapped bowling balls to use as an alternative to gravel or sand.
Brunswick shut down the Muskegon plant in 2006. Olson said many of the balls aren’t in good shape; they don’t have finger holes and aren’t polished, according to MLive.com.
He has donated some and plans to give some to the Muskegon Heritage Museum. He’ll use the rest for landscaping or to make sculptures, according to WZZM-TV.