Bloomberg Libyan oil-facility guards prevented two of the country’s biggest fields from resuming production, days after the National Oil Corp. reached an agreement to restart operations there to boost output in the politically divided OPEC state. The El Feel, or Elephant, and Sharara fields still aren’t operational after they were shut more than a year and a half ago, …

  Bloomberg Anglo American Plc’s De Beers will flood a massive diamond mine located beneath a subarctic lake in Canada’s Northwest Territories after failing to find a buyer. De Beers will begin inundating tunnels at its Snap Lake mine in early January, it said in a statement distributed recently. In April, it put the site on care and maintenance, saying …

  Bloomberg Vale SA is betting on the world’s biggest iron-ore project as a way to become more competitive with its largest rivals. For Brazil, the $14 billion S11D mine is a rare bright spot amid the country’s longest recession on record. “This is a confident affirmation that yes, Brazil will return to growth,” Minister of Mines & Energy Fernando …