Workers at the world's top copper mine, BHP Billiton's Escondida in Chile, launched what they vowed would be a "long and hard" strike on Feb. 9, causing jitters on world commodity markets.
Escondida is the first of several key mines worldwide where contracts expire this year, and markets are watching nervously to see how the strike impacts supply and prices.
Alp Gürkan, the former chair of Soma Holding, which owned a mine that was the site of Turkey's worst-ever mine disaster in 2014, demanded his acquittal at his first hearing on Dec. 26, Doğan News Agency has reported.
Gürkan said he resigned as chair of the company on December 2013 and handed over the baton to his son due to his old age.
A 56-year-old bauxite miner was killed on Thursday after being crushed by a boulder in the central Greek region of Amfissa.
The accident occurred while he was operating a vehicle in a mine shaft operated by the Delphi-Distomon company.
The man was rushed to hospital, but was pronounced dead on arrival.