Thanks for the link!
There is a book called "the Vimanika Shastra" It actually describes in detail how to make flying saucers or "vivmana".
I also found this excerpt: The antimony sesquioxide and the mercury oxide are warmed together to a temperature of 500 degrees centigrade and to a pressure of 1 atmosphere of oxigen. The heating must continue at a costant temperature for two days. The final product it's a substance called mercury and antimony oxide. This process hasn't been reported by the official press until 1968.
The oxide obtained in this way is dissolved in pure mercury; oxde and mercury must be present in the same quantity. The mixture is then sealed in a container and put in a nuclear reactor, where it is irradiated for about twenty days at a temperature of 500 degrees centigrade.
Having done this, the mercury in excess is eliminated and what remains is a "cherry-red" substance with a consistance similar to liquid honey. Capsules containing this liquid are put in nuclear bombs."