A Borders bookstore in Minneapolis has approved a new union contract for its workers. The move is significant because the outlet is only the second Borders store in the country to go union, and the contract comes more than two years after workers had initially voted to unionize. During the interim, the workers who organized the union drive quit in disgust and the company was accused of trying to break the workers’ resolve through intimidation. Now, the hope from the union is that the contract will provide it an opening into other area booksellers.