Bloomberg For OPEC, there are few enemies more fearsome than the tiny Oklahoma town of Cushing. With oil inventories at Cushing creeping near an all-time high, US benchmark futures prices are struggling to advance despite the promised production cuts agreed to by OPEC, Russia and other producers. And the storage tanks are likely to stay full as refiners park …

  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 …