Glencore boosts copper output and reserves as Rio deadline looms
Rio must make an offer next week or end talks on deal to create world’s biggest mining group
Rio must make an offer next week or end talks on deal to create world’s biggest mining group

Discussions over a tie-up to create the world’s largest mining group come as race to secure copper reshapes the sector

Swiss mining group reports first financial results since failure of tie-up talks

The proposed $260bn tie-up would create the world’s biggest copper producer at a time of soaring demand for the metal

Revived attempt to create a $260bn megamerger underscores the desperate need for copper

Rio wants to hold both CEO and chair roles in combined company while Glencore holds out for premium

Deal would have created world’s largest mining group