I blame working Alaskans for allowing socialist oil royalty checks from the state to fund marijuana habits that make them too pacified to notice their pipeline was about to crack.

 "The oil company said it was surprised to find such severe corrosion, and had gone 14 years without using a device called a "pig" to clean out its lines because it did not believe it was necessary."

See what I mean? That pipeline was obviously being run by a bunch of stoned slackers. Perhaps the engineers were too busy tending hydroponic farms hidden in the IR glow of pumping stations instead of doing their jobs.