Rio opposes sharing Australia iron-ore rails

SYDNEY, June 20 (Reuters) - An Australian move to open private iron-ore rail haulage lines to more miners could cost the nation A$30 billion ($28.5 billon) in investments over 20 years, mining company Rio Tinto Ltd/Plc (RIO.AX)(RIO.L) said on Friday.

It said it was opposed to a call by Australia's National Competition Commission to allow other mining firms to use its rail lines in the iron ore-rich Pilbara region of west Australia. (Reporting by James Regan, editing by Mark Bendeich)