Tom Mason & Tonja De Sloover are Energy Transfer’s One-Two Punch
Tom Mason and Tonja De Sloover and their legal department at Energy Transfer Equity are finalists in the 2017 Outstanding Corporate Counsel Awards for Business Litigation of the Year. And they’ve had a lot of that to deal with: In Delaware, a $33 billion fight over a failed merger: in North Dakota, endless legal struggles over the Dakota Access Pipeline; in Texas, they’re leading the battle to restore a $535 million jury verdict on appeal. Learn more about the philosophy behind their aggressive approach to litigation in The Texas Lawbook.






