Historical clue formulations

• Crash-investigating org. — 2025-12-15
• Government org. that investigates accidents — 2025-04-27
• Accident-investigating org. — 2024-09-23
• Accident-investigating org. — 2019-09-01
• Accident investigation org. — 2019-01-13
• Accident investigation org. — 2018-07-17
• Grp. called in when things go off the rails? — 2018-06-21
• Crash-probing agcy. — 2017-03-29
• Federal investigative grp. — 2016-11-24
• Accident-investigating agcy. — 2016-09-25
• Accident investigator, for short — 2016-08-07
• Crash-probing agcy. — 2013-09-25
• Accident investigator, for short — 2013-05-30
• Investigator of many accidents, for short — 2012-06-07
• Pipeline accident investigator: Abbr. — 2011-07-29
• Crash-investigating org. — 2011-02-27
• Wreck checker: Abbr. — 2010-12-18
• Wreck-checking org. — 2010-12-11
• Crash-probing agcy. — 2009-12-15
• It may delve into a derailment: Abbr. — 2009-07-25
• Fed. accident investigator — 2008-07-12
• Crash-probing agcy. — 2007-07-10