Vayama
FYI ☛ BMO Capital Markets pages 22 and 23
"A consultant who used to work at Phosphate Hill indicated that Phosphate Hill aluminum and iron levels were understated (10–30% for aluminum and 5–15% for iron) in original assay data, and believes the same partial digest assay method was also used at Annie-Jane and therefore expects any historical impurity data to be understated similarly."