Rio Tinto $4 billion financing deal for Oyu Tolgoi imminent — report

A $4 billion finance package for the expansion of Rio Tinto's (LON:RIO) Oyu Tolgoi copper and gold mine in Mongolia is likely to be approved this week in Ulan Bator, the capital. Operator Turquoise Hills (TSE, NYSE:TRQ), which owns 66% of the...