Malenkai, since it was a sole proprietorship, which I believe ends when the proprietor passes, unlike a corporation, the NDA's are now probably invalid and the other party is not here. That said, I was just supposed to test a machine, which never happened, so I never quite knew what he was working on. So for me it's like the old math equation, half of nothing is still nothing. It's an unfortunate thing. I would have liked to test one in the horrid red dirt in Virginia where I (think) I still have a permission. Sad. With covid I'm hoping I can still get to the site, but nothing is really certain, is it?