There are six manufacturing sites where pure titanium is processed, as found on the tie by the Citizen Sleuths. Four are in the Untied States, and one of those sites is Oremet, down in Albany, Oregon.
Another site is in the UK, and another in Japan. That leaves three sites in the USA.
What those three other sites are, exactly, I do not know. I just went checking my notes and all the information above came from Alan during his presentation in Portland in 2011. I don't remember if he mentioned the three other places, but I kind of remember them as being Back East places.
Maybe the CS website has more information posted these days on this subject. If you check, let me know. I don't think it had any more info the last time I checked, and certainly my notes from their site does not disclose any more information.