Article Photos: Correction: Southern's Big Bet story 6/6

In this Nov. 13, 2012 photograph, workmen walk past the gasifier coal feed dispense vessels at Mississippi Power's Kemper County energy facility near DeKalb, Miss. The plant, still under construction, is designed to use a soft form of coal called lignite in a gasification process to generate power. The project has come under legal challenge by the Mississippi Sierra Club. The environmental organization says the gasification technology is expensive and unproven. (AP Photo/Rogelio V. Solis)