CEO Joe Kaeser said Adani's Carmichael mine would go ahead with or without Siemens, adding he had to balance stakeholder interests.

Climate activists and mine opponents are asking the company not to provide a key piece of rail infrastructure to transport coal from the mine.

The South African gold and platinum producer has exercised an option to acquire an additional 12% interest in the tailings retreatment company.

The luxury vehicle maker plans to ethically source the raw materials to make its electric cars.