| When I worked with a certain aero-space manufacturer they used to test jet engine components. They had pits in solid, concrete floors and the pits were lined with 8" of lead. They'd attach a piece (say, a turbine disc?) onto a mandrel, lower it into the pit and spin it at ever-increasing speed until it blew up (sometimes around 30 - 50,000 rpm).
Solid lead at room temperature would splash like it was liquid (which it probably was during that instant of time).
Those pimples are really neat... wonder if they're possibly volcanic rather than "meteor splash"? |