A rights group estimates that thousands of children as young as nine are working in the country's gold mines, violating international and local laws, as well as risking their lives.
Meanwhile, the country’s overall oil production is expected to reach 5.3 million barrels a day by 2030, which is 1.1 million barrels per day lower than last year's expectations.
The stock closed 4.17% higher in London Tuesday after the miner revealed the discovery of two rare matching rubies from its Montepuez mine in Mozambique.