DEMAND: The world will need to double its copper supply and quadruple its nickel supply in the next 30 years to facilitate a decarbonised world, an executive at miner BHP BHP.AX said. Prices of the metal used in construction and to conduct electricity hit a record high of $10,747.50 in May but have since lost momentum as economic growth slowed. The dollar was steady on Wednesday but has surged in the last week as strong U.S. economic data and high inflation lead many investors to expect a U.S. rate hike as early as mid-2022.