Grand Forks Herald | Track where oil train derailed was inspected day before fiery accident, FRA says Grand Forks Herald Teams from the FRA and National Transportation Safety Board continued their investigations Friday at the site just east of Heimdal where six oil tanker cars derailed Wednesday morning, spawning a fire and smoke plume that forced the town's 25 residents ... Track reopens where oil train derailed in North Dakota Exclusive: Oil on fiery North Dakota train less volatile than limit Oil in North Dakota derailment was treated to cut volatility |