Technology designed to detect U.S. energy pipeline leaks often fails

By Jarrett Renshaw and Devika Krishna Kumar NEW YORK (Reuters) - On a routine check of a surface coal mining facility in rural Alabama early this month, inspector Randall Aldridge first smelled gasoline. Aldridge happened upon a leak on the main fuel artery to the U.S. East Coast known as the Colonial Pipeline, in what turned out to be the company's largest gasoline spill in nearly 20 years. Colonial Pipeline Co and its peers in the oil and gasoline transport sector, tout high-tech, complex leak