Coal bursts are triggered by a volatile and uncontrolled energy release from within an overstressed rock mass or coal seam.

Wind and solar have retained their position as Australia’s cheapest new-build electricity generation despite a 20% average rise in technology costs.

Anglo reported a more than 40% fall in underlying earnings to $5.1bn, while Teck posted an even sharper drop in Q2 profit of over 50% to C$1.48 billion ($1.1bn).

QB2 is the first step in Teck’s plan to grow its copper footprint and implies extending the aging deposit’s life by 28 years.

Andrés Camacho, 42, will be in charge of Colombia’s transition away from its two main sources of revenue: oil and coal.