Pittsfield’s Elizabeth Banks was one of the local celebs at the Sundance Film Festival in Park City, Utah, Tuesday. She joined her “Little Accidents” costars Jacob Lofland and Boyd Holbrook to promote the film, which is about residents in a coal mining town whose lives are affected by the same tragedy. The Sara Colangelo-directed movie was adapted from a short, also directed by Colangelo, that featured a Massachusetts character. She explains her connection to the area in Vanity Fair this week. “I’m from a small town north of Worcester,” Colangelo says, “and it’s a factory town. The short film ‘Little Accidents’ was set in a factory and I was interested in, first of all, placing a narrative within a single town, and the politics of that. I was very interested in how, when an accident does happen, what the socioeconomic lines of the conflict are and how it affects different people within a community in different ways. It definitely came out of being from an industrial town and the aesthetic of an industrial town that really appealed to me, and it’s something I wanted to bring out.”Mark Shanahan can be reached at firstname.lastname@example.org. Follow him on Twitter @MarkAShanahan. Meredith Goldstein can be reached at email@example.com. Follow her on Twitter @MeredithGoldste.