Keystone pipeline leaks becoming more severe in recent years, U.S. data shows

U.S. government data shows spills from TC Energy Corp.'s Keystone pipeline have increased in severity in recent years. The Calgary-based company has more than 250 people on the ground in Washington County, Kan., cleaning up the approximately 14,000 barrels of oil that leaked into a creek last week. The spill is the largest in the history of the 4,324-km Keystone pipeline. A report last year from the U.S. Government Accountability Office said pipelines are considered to be much safer than moving