Shenghe take 55% of Peaks profit on all the juicy high grade,...

Shenghe take 55% of Peaks profit on all the juicy high grade, near surface stuff over the first five years, the Tanz Govt takes 16% ahead of that split, Peak Directors and Management carve out their 'due rewards' with performance rights and options with the burden of increasing salaries etc
Tanz Govt 100% - 16% = 84%
Shenghe 84% - 55% = 37.8%
Peak 37.8% - incentive/performance rights and options dilution etc.

Shenghe is not here to make friends, they are here to take the cream while the metrics stand in their favour.
37.8% of profit is surely still a substantial amount, it's just nothing like what it was when Alistair Hunter held a large portion of the company in his tight Scottish hands and Mark Maine was at the helm.