They used multiple front companies and routed orders through third-world countries to buy the needed ore. More than likely, pizza ovens--or more likely, I'm gue

They used multiple front companies and routed orders through third-world countries to buy the needed ore. More than likely, pizza ovens--or more likely, I'm guessing unspecified parts for pizza ovens--were just one of many cover stories used by those companies, and at least some of them were probably more believable than pizza ovens. You wouldn't use the same cover story for all the companies making the purchased. Plus, titanium dioxide is used as a pigment, which would have reasonably explained a great deal of the rutile ore they purchased.