Each tenant at Pike Place Market in Seattle, WA that had grease-producing fixtures was responsible for replacing waste drainpipe with Blücher stainless-steel pipe. Photo courtesy of Seattle Municipal Archives. See the full article via Plumbing & Mechanical Engineer, May 31, 2013 @ https://www.pmengineer.com/articles/90758-seattle-finds-savings-with-stainless-steel-retrofits