Curated by Holly Ewald and Becci Davis, Unpolished Legacies is a group response to the RISD Museum’s big shiny Gorham survey. Once the world’s largest silver manufacturer, Gorham was also one of Rhode Island’s biggest polluters, dumping toxic materials into Mashapaug Pond until the factory closed in 1970 (coincidentally, the same year the Clean Water Act passed). Unlike the RISD Museum show, Unpolished Legacies looks at the company’s effects on the local environment, particularly with regard to the pond. This is spelled out quite literally (“GORHAM PUNISHED US”) in a poem by students from Dr. Jorge Alvarez High School, built amid much community uproar on the toxic factory site. Tina Tryforos used cyanotype, a non-silver photographic process, to recreate about a dozen ghostly Gorham pieces, while Erik Gould’s 1997 photo of the dilapidated showroom highlights a carpeted spiral staircase leading nowhere. The show runs through October 10, with three events scheduled between now and then.