OK nice presentation today clarifying the kaolin (alumina clay) recoverythe original announcement mentioned a 20kg sample however today's announement specifies the results were from a 4kg sample this makes the 1.06kgs of 99% metallurgical grade alumina the same recovery as standard alumina from bauxitemy understanding is around 7 parts parts of bauxite makes 2 parts of alumina (28.5% recovery) so, with AKA, they recovered 1.06kg of alumina from 4kg of ore, which is a 26.5% recovery some interesting looking prices at this link (however need to research more to understand)http://www.alibaba.com/showroom/kaolin-clay-price.html
(20min delay)