Councilman Mark Squilla was so impressed with their work that he asked the pair to tackle what might be considered the mother of all blight, the rusted, asbestos-ridden steam plant at Ninth and Willow Streets, two blocks east of the Reading Viaduct. Since it was shut down in 1989, the looming industrial relic has become a different kind of Philadelphia landmark. Its graffiti-tagged smokestacks, which are easily visible from I-676 and I-95, have somehow remained a dominant feature of the city’s landscape for three decades.
Source: These guys are Philadelphia’s professional blight busters | Philly.com