Alumina owns about 40% of of Alcoa World Alumina & Chemicals, the world’s largest producer of the metal.

Activity on the CME's aluminum contract has shifted up several gears in recent months.

Rio's Gladstone operations include its Yarwun and Queensland alumina refineries and its Boyne aluminium smelter.

Government says it’s considering how to handle offtake agreements that function as loans or investments by China in Canadian mining companies as it continues to clamp down on critical mineral transactions.

The duties range from 1.45% to 169.66%, varying by country.

Alumina owns about 40% of of Alcoa World Alumina & Chemicals, the world’s largest producer of the metal.

Research shows that Canada’s eight largest pension funds hold some $2.1 trillion in assets but only a quarter was invested in the country.