(DuPont, WA) -- The National Transportation Safety Board is making progress in its investigation into Monday's deadly Amtrak train derailment between Tacoma and Olympia. Investigator Bella Dinh-Zarr said they hope event data recorders on the train will help them determine why it was going 80-miles-per-hour in a 30-mile-per-hour curve where it flew off the tracks. Investigators have obtained the recorders from the rear locomotive and the lead locomotive. A preliminary review shows that the train's emergency brake was automatically activated, meaning the crew did not engage it. Investigators are also in the process of setting up interviews with crew members in hopes they can shed light on the events leading up to the crash.