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Wickerham_Koppers_AlleghenyRiverCleanup_5-16-2022_2668.JPG
Koppers volunteers clean up along the Allegheny River with Allegheny Cleanways and Friends of the Riverfront on Monday May 16, 2022 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Wick Photography)
Koppers volunteers clean up along the Allegheny River with Allegheny Cleanways and Friends of the Riverfront on Monday May 16, 2022 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Wick Photography)