WASHINGTON, Aug. 11 -- The Williams Companies Inc., Tulsa, Oklahoma, has submitted a public comment letter to the U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration (PHMSA) regarding proposed regulatory reviews aimed at improving the efficiency of energy delivery systems. In the letter, Williams outlines how existing regulations have not kept pace with technological advancements in the pipeline industry, creating barriers that could hinder effective energy m  more