With economies seeking to tap into the $4.5-trillion opportunity that the circular economy presents, mining companies are under pressure to adapt faster and embrace change in order to remain relevant, Accenture senior MD Rachael Bartels said last week. Speaking to Mining Weekly Online on the sidelines of the Joburg Indaba, she explained that, by taking the right steps, mining and metals companies could reposition themselves to create a sustainable source of new revenue streams through the economy.