Uncertainty around the charter has deterred investment into a sector that accounts for 8 percent of gross domestic product in the world's top platinum producer.
Sibanye Canada and Regulus’ newly formed Argentinean subsidiary Aldebaran Resources will create a strategic partnership to unlock value at the copper-gold project, located in the San Juan province.
US law firm Bernstein Liebhard said the suit would deal with "misleading statements" made by the precious metals producer, which has had 21 fatalities on its operations so far in 2018.
