It's been a tumultuous year in mining and the most read articles of 2019 show an industry grappling with technological change, market volatility and climate change, but still unafraid to take moonshots.

The new version of Law 7722 allows for the use of cyanide and sulfuric acid in mining operations.

The company is moving forward with its Lucky Friday silver mine without the union workers, which have voted to remain on strike.

Adonis Pouroulis, who founded Petra in 1997 and has been its chairman ever since, will leave the company on March 31.