DMarelli
Registered
If you look carefully at the pictures from the Olympian you can easily see from the neck fragments that the cylinder was indeed aluminum and being used as a stage cylinder. Its valve is still hanging from the steel piping passing through the damaged rear wall of the dive shop. I have never heard of anyone using aluminum cylinders as bank or stage cylinders, nor do I know of aluminum cylinders that have service pressures high enough to be useful as a bank cylinder. I have heard that the cylinders are 1940s vintage (undoubtedly military surplus) aluminum cylinders wrapped with steel. I am sure DOT will be investigating this but it can't go well for the shop owner.
