The move threatens to jolt China's exports of aluminium, which have been booming in recent months. Mexico "is a big market" for Chinese aluminium foil.
As global demand for lithium hits overdrive, Albemarle Corp is investing millions of dollars to engineer specialized types of the light metal for electric car batteries, part of a strategy to remain the niche market's top producer.
Congo is Africa's top copper producer and the world's leading miner of cobalt, which is a key component in electric vehicles and other electronic products.
Botswana's Minergy Limited said on Wednesday it has started construction at its Masama Coal Mine, which is set to be the country's first privately-owned coal mine, following government approval.
Phoenix Global Mining, which is reopening a U.S. copper mine abandoned during World War II when its workforce left to fight, plans to list in New York in September after a disappointing launch on London's AIM market.
