Well, there are still Scheutzen and Swiss, so no need to panic. DuPont used to be the big name in the US for the holy black. Then it went away, if I recall because the plant blew up although I may be mistaken. Anyway, that opened the way for Goex to take over the DuPont assets. So now Goex is closed and up for sale. There have been many other black powder companies which are not around anymore - have you found any Elephant powder lately? Anyway, the world has not ended and if necessary, we can make our own or maybe even get powder for fireworks (a poor second choice, I know!) like the Boston Marathon bombers did.
~Kees~