Ann: PRU: Perseus acquires 15.03% interest in Orecorp, page-29

You are spot on about 2017, that President nearly destroyed the mining industry, thank god that the new President Samia/Samira came in and immediately repaired the situation.
Long term Shareholders were well rewarded for their patience in the end.
Tanzania prior to 2017 was one of the best safest mining jurisdictions in Africa attracting $B’s of foreign investment. That foreign investment is returning now which includes BHP as well as other big players..