© AFPImage dating from the 30's showing German giant airship Hindenburg flying over Manhattan, New York.
Some 80 years on from the Hindenberg disaster, doubt still grows over the cause of the devastating fire that brought down the airship.
Research into the iconic hydrogen airship's demise has yielded many theories. The prevailing one, backed by the US Department of Commerce, is that a hydrogen
gas leak was ignited by static electricity in the air - but decades later, the prospect that the luxury airship could have been sabotaged continues to garner intrigue.
The idea was raised once again at a memorial for the 36 victims of the tragedy Saturday.
Speaking at the US Air Force base in Lakehurst Maxfield, New Jersey, where the airship disintegrated in front of a shocked crowd, a relative of one engineers who worked on the Hindenburg shared his thoughts.
"We will never for sure [know] what exactly happened. Hopefully, it was not sabotage," Dr Horst Schirmer said, as quoted by
Asbury Park Press.Due to volatility of hydrogen, history is littered with tragic airship accidents. But records show that the FBI did consider scores of sabotage theories in the aftermath of the disaster.
Clandestine communistsOne suggestion was that the airship could have been destroyed by a secretive group of communists and anti-fascists. A declassified
letter written by FBI special agent G N Lowdon highlighted remarks made in Communist Party of America newspaper, the
Daily Worker.
Lowdon said a particular article in the newspaper caught his attention after reports in the US press about the "possibility that the 'Hindenberg' was sabotaged".
He claimed the
Daily Worker carried an article a week before the disaster claiming that German seamen were being recruited to do "perilous underground work aboard giant Reich liners plowing between New York and Germany."
Although Lowdon said he found no evidence of this, it raised the possibility that there were clandestine groups preparing to sabotage transport systems associated with Nazi Germany.
Acrobat theoryCommander Charles E Rosendahl, who was in charge of Lakehurst Naval Air Station on May 6, 1937, told FBI investigators he saw sabotage as a "logical cause". The
FBI notes that "due to various happenings that have been called to his attention" Rosendahl is "of the opinion" that the fire in the gas shaft was started by an individual.
One incident said to have irked Rosendahl is an account by Dr Hugo Eckner, manager of Luftschiffbau Zeppelin, who interviewed Hindenburg staff after the incident.
Eckner allegedly told Rosendahl that the rule stating "a passenger was not to be allowed out of the passenger quarters unless in company with a member of the crew was not strictly enforced."
Rosendahl then mentioned hearsay and suspicions about a passenger named Joseph Spah, who had been allowed to tend to his dogs in a freight room below the Hindenburg's gas tanks. Spah was an acrobat, and according to Rosendahl could have conceivably used his abilities to reach the fuel area. The theory was not substantiated and came to nothing.
Media conspiracyOne of the more bizarre theories was that the members of the press had orchestrated the disaster for financial gain. US Air Force Colonel Harold E Hartney passed on a letter on the issue to the FBI dated May 11, 1937.
The sender's name and address was redacted. The person wrote that "logical" thinking pointed towards the press as culprits, although the letter's sender admitted to not having "direct evidence for my conclusions."
"The Hindenburg has been coming to this country for years. It was not extraordinary news... According to all the rules of human nature, most people wishing to take pictures of the ship would have left for home.
"With all this, this accident was photographed from every angle. As a matter of fact, I have never seen an event more profusely photographed," the person wrote. "To me, it seems a possibility that a bunch of photographing racketeers would frame an accident of this kind, as they would any other big job for money."
The bulletSuggestions that the Hindenburg was brought down by gunfire was also widely mentioned.
The bullet theory led Senator Royal Copeland of New York to contact the FBI on May 8, 1937. He also asked about speculation of mysterious footprints being found in a field near the crash site.
The FBI responded by saying that their agents investigating the area were
"not impressed" with the prints. The declassified documents reveal the footprints were later identified as children's and suggested they had been left a day after the Hindenburg explosion.
I remember, years ago now, seeing a TV documentary on the subject. I think it must have aired in the 80's.
The doc makers had found a researcher expounding the "thermite theory". -That is, apparently, the entire blimp exterior had been treated with a special metallic paint made from aluminum powder and iron oxide in the right quantities to create a substance which burns at a very high temperature once ignited. Thermite.
This would explain why the fire looked the way it did, and how it could have gotten burning in the first place.
But for whatever reason, this solution is stiffly rejected by some. -Here's one website dedicated to debunking the thermite "myth": [Link]
Only thing is... that 80's documentary included a fairly convincing experiment; they pulled from the wreckage archives a piece of the surviving original blimp skin. They treated it to an electrical arc zap similar to what would have been experienced at the time, and sure enough, poof it went, burning like a piece of flash paper.
But for some reason, this is a very upsetting reversal of the narrative for a certain portion of the public. -Perhaps because the idea of the hydrogen air ship exploded was a staple of many people's childhoods. It certainly was in my case. Every 10 year-old bore sage wisdom regarding hydrogen and blimps.
What a thing to build into a sacred cow, though!