Tanzania's richest man, Mohammed Dewji, plans to invest $100m in the proposed Dangote East Africa refinery, highlighting growing investor confidence in the

Dangote Kenya refinery confirmed: Lamu will host a 700,000-barrel-a-day plant costing up to $17 billion, with soil tests and engineering under way.

The richest man in Tanzania, Mohammed Dewji, seeing Dangote’s refinery expansion in East Africa, has decided to get in on the action