You are correct there is not a 1.9 % royalty
SO4 has a 4% royalty because it is not their ground
big red flag
they dropped lake wells like a hot potato
it will be nice to see the real numbers if they ever dared to put a reserve on lake way
the 4% royalty won’t matter in the end
as the lake is a registered native title site DYOR
so very unlikely it will ever be mined IMO