Opposition to the proposed power line that would run through Mansfield's city limits continues to grow as business leaders and elected officials join the effort to have the line's route run around the city. Several dozen Mansfield residents attended a Tuesday open house at Newborn United Methodist Church hosted by Georgia Transmission Corporation, a non-profit group that builds power infrastructure for the state's electric membership cooperatives. Georgia Transmission had more than a dozen experts on hand to explain the ins and outs of why the 115-kilovolt transmission line was needed, how