Wall Street Journal, 2/24/09http://online.wsj.com/article/SB123552499920765485.html Natural-Gas Producers Launch Lobbying Group U.S. natural-gas companies, hurt by a combination of booming supplies and falling demand, are banding together to promote their product with lawmakers and the public. Such industry heavyweights as Newfield Exploration Co., Devon Energy Corp. and Chesapeake Energy Corp. will announce Wednesday the formation of the American Natural Gas Alliance to push…