Colombia enters crucial make-or-break stage

South32 said in February it had agreed to sell the business in New South Wales state for $1.65 billion.

India tops the global ranking with demand nearly 50 times that of its mined supply.

The diversification strategy includes plans to expand into international mining to secure access to minerals including copper, cobalt and nickel, as well as lithium.

Stories of reinvented coal mining regions, regenerated communities and rebuilt ecosystems are told in a new book published this month.