Three of the meanest underground mining machines

Over the past five years, Glencore’s zinc production has shrunk, following sales of its shares of zinc projects in Bolivia and Peru.

Under Cronin's leadership, Adriatic went from explorer to silver producer in Bosnia in less than seven years. 

Qatar’s sovereign wealth fund has so far invested more than $450 million into projects across North and South America, Europe and Africa.

Over 95% of Glencore shareholders were in favour of keeping the coal unit to help fund growth in metals and support returns.