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We're going to hear from the survivor and the family of one of the people who was killed. first, we learned just a short time ago from investigators on scene as jason carroll reports, we already have learned a lot. >> reporter: investigators cannot say whether it was human error or mechanical failure. but what is already clear to them is the metro north train was traveling much too fast before it derailed. >> the train was traveling at approximately 82 miles an hour as it went into a 30 miles an hour curve. >> when i heard about the speed, i gulped. >> reporter: investigators from the national...

Was traveling much too fast before it derailed. >> the train was traveling at approximately 82 miles an hour as it went into a 30 miles an hour curve. >> when i heard about the speed, i gulped. >> reporter: investigators from the national transportation safety board recovered both of the event recorders, the device showing that two minutes before the train entered the curve near the spittation. what does it tell you, anything at all? >> at this point in time i can't really say. >> the speed limit going into the curve is 70 miles an hour, and on the curve itself, 30 miles per hour maximum. the ...