As the Trump administration pushed hard for new LNG export terminals, some engineers warned that the risk of a major explosion was being played down. Federal regulators have been slow to respond.
New federal rules on pipeline safety are being praised by the oil and gas industry but dismissed by pipeline critics in Pennsylvania as unlikely to make pipelines any safer.
The Bakken system pipelines racked up at least eight leaks in 2017. Mariner East 2 and Rover saw drilling fluid spills before fuel even entered the lines.