FILE - In this Nov. 1, 2016 file photo, a fog of smoke covers the trees near an explosion of a Colonial Pipeline in Helena, Ala. A new federal lawsuit accuses a pipeline company of failing to tell work crews where a major U.S. pipeline was underground before they ruptured the line, touching off a deadly explosion. The estate of Anthony Willingham, an Alabama worker who died in the blast, this week filed a federal lawsuit against Georgia-based Colonial Pipeline Co. and a partner company. (AP Photo/Brynn Anderson, File)
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