RE:RE:RE:RE:RE:Kozmo Truce with answers That works just fine but not if you are starting with ... 20 Parts per Million ! Even at regular concentrations its one of the more difficult ores to process and by regular concentrations I mean at least an entire order of magnitude greater than what TTX has.
Also, I'm sure the Americans use lbs but I am pretty sure the rest of the world prices it by the Kg. Lets just say both are used.
https://www.statista.com/statistics/1009173/tantalum-price/