Calgon Carbon Corp. plans to invest approximately $20 million to re-start an idle production line at its Big Sandy plant in Catlettsburg. The Pennsylvania-based company is restarting the line, which is expected to be complete by early 2009, to meet an anticipated demand from the electric utility industry. The additional capacity will be used to remove mercury from coal-fired power plant flue gas, which is mandated in some states by 2009. Until it is fully utilized for mercury removal, the line will partially be used to satisfy demand for granular activated carbon in Calgon Carbon’s traditional markets. The expansion is not expected to create any additional jobs.