A leak of nearly 13,000 barrels of crude oil from the Keystone Pipeline near the Kansas-Nebraska border last year was caused by a flawed weld and stress on the pipe from being bent, the operator said.

BATON ROUGE, La.--(BUSINESS WIRE)--EPIC Piping ("EPIC" or “the Company”), one of the nation’s largest industrial pipe manufacturing companies, today announced that it has acquired Minnesota-based ...