According to this documentary, information regarding the cargo is still (in the year 2002) regarded as confidential and details are not available from the CIA, FIA, Coast Guard and/or US Navy. On the other hand, there appears to have been no secret that the US Atomic Energy Commission was acquiring zirconium, so it is not clear why any of these organizations should actually have information related to the "Flying Enterprise". In the interview with Bekker, Carlsen tells him that yes the ship had a zirconium cargo and that it came from the German nuclear energy project. While there seems to be no reason to doubt the first statement, the origin of the zirconium is questionable as the German nuclear energy program was not very advanced. It has been speculated that the zirconium instead came from Philips in Eindhoven, the company that had the first patent on a process to obtain high purity zirconium, and that the buyer was one of the companies intending to bid for a contract with the US Atomic Energy Commission.