November 20 AGM, page-36

Different coal will produce different fly ash so it has more to do with the source of the coal than the plant location. The thing worth note is that fly ash around the world is graded with specs readily available to the buyer. The sample batches currently being processed thru the pilot plant will be allowing LWP to understand the process variation required to meet the ISO standards utilizing a range of fly ash grades. From what I understand there are some grades that would be avoided such as those with high fe levels as this can had adverse effect of the sintering time required and final product strength.