DENVER, Colorado – Benjamin Smith, 30, a former teacher at Escalante Middle School in Durango, was sentenced to 40 years in federal prison and lifetime supervision after pleading guilty to several crimes related to the sexual exploitation of minors. According to court documents, Smith used Snapchat to pose as a 16-year-old girl named “Kristin.” Under this identity, he contacted minors in the Durango area and manipulated them into sending sexuall…