"Oregon has asked the Federal Railroad Administration to place an open-ended moratorium on oil trains traveling through the state, because preliminary findings of an investigation into the June 3 derailment in Mosier suggest inspectors might not be able to detect the problem that likely caused the crash.
Investigators identified a problem with the screws that fasten the rails to the railroad ties as the cause of the derailment. But in a June 8 letter to the Federal Railroad Administration, an Oregon Department of Transportation administrator said recent inspections failed to catch a number of broken screws along the track in Mosier. Hal Gard, the state's rail and public transit administrator, discussed the letter at a meeting of the Oregon Transportation Commission in Hood River on Thursday.
'Until the underlying cause of the bolt failures is understood and a means of detecting this defect is developed, we request a moratorium on running unit trains over sections of track that contain track fasteners of this material in the state of Oregon,' Gard wrote."