July 21, 2015, 6am PDT
An estimated 35,000 gallons of crude spilled from four of 22 toppled tank cars of a 106-car oil train near Culbertson in northeast Montana on July 16. Unlike other oil train derailments, no fiery explosions occurred.
May 8, 2015, 7am PDT
Critics warned that a Department of Transportation rule allowing up to 10 years to phase out existing oil tank cars would result in more explosions. The rule was issued on May 1; an explosion occurred May 6.
The New York Times - Energy & Environment
May 4, 2015, 9am PDT
Following up on last month's emergency rule addressing trains speeds, the Transportation Department issued new rules addressing tanker car standards, long thought to be one of the most important factors contributing to fiery oil tank car explosions.
The New York Time - Energy & Environment
March 10, 2015, 1pm PDT
The new oil tank cars were supposed to be key to preventing the fiery explosions associated with oil-train derailments. However, four recent explosions since Feb. 14, with two occurring last Thursday and Saturday, all involved the new tankers.
February 17, 2015, 2pm PST
A 109-car oil train carrying crude from North Dakota derailed Monday afternoon, causing a fireball that was still burning Tuesday morning. Initial reports had at least one tanker leaking oil into a tributary of the Kanawha River, closing water plants