Wreckage from the Hindenburg. At the top is a section of one of the propellers. Below that are various metal artifacts melted from the 3500 degree hydrogen fire which burned for all of 34 seconds. The girders which gave the airship its rigid shape were made of aluminum alloy, which melted into the puddles you see on the left. The silver knife handles at the lower right and the steel faucet above them had higher melting points and survived intact, though worse for the wear. The fragment of aircraft structure in the middle is a piece of the trailing edge of a control surface on the tail, where the fire did not reach. Othewise it would be a puddle of aluminum, too.