What links the site with (once) molten metal to a crash on the date you mention?

I have double checked; nothing that I can find. However, that does not rule out other unrelated aircraft losses.

We need some more clues.

Latest I have is: “……We were on the beach south of Chivelstone, the whole place was littered with it…..”

Thing is, in that area there would no doubt be a lot of debris from WWII,
other than from crashed aircraft.