Ann: Updated research report, page-41

Wow they are really cracking down...

I guess most of this was already known such as the 16% free carry, but this was interesting -
"The Government is also entitled to acquire (in total) up to 50 per cent of the shares in a mining company, proportional with the quantified value of tax expenditures incurred by the Government in favour of the mining company."

Likewise:
With respect to the employment aspects, the Mineral Rights Regulations require mining companies to have a well-documented training and succession plan, and impose increasingly stricter requirements for employing non-Tanzanians in the mining companies. Specifically, the Regulations have made it compulsory for mining companies to solely employ Tanzanians in all junior or middle level positions. However, in the event that the expertise or skills are lacking at these levels, companies would be required to provide training to Tanzanians in that field, either locally or outside Tanzania.
Another important and notable feature of the Mineral Rights Regulations is the requirement for exclusive use of insurance services being provided by Tanzanian insurers, as well as legal services being provided by Tanzanian law firms. Companies are also required to maintain operating accounts in indigenous Tanzanian banks which are either exclusively owned by Tanzanians or have majority shareholding by Tanzanians.