[smillie]

You can get a very similar effect by throwing a snowball into a pot of molten metal. The steam explosion can empty the pot. One guy put an ingot of aluminum into a pot without properly warming it. When it got hot enough to turn the moisture inside the ingot to steam, we got an aluminum coated ceiling plus aluminum rain. Only the guy loading the pot was nearby and his burns luckly turned out to be minor. The metal went mostly up instead of at him. He got a few pieces of rain on his head which gave him some unusual bald scars.