Rio Tinto






Turquoise Hill Resources' Oyu Tolgoi gold-copper mine in Mongolia, 80 km north of the Mongolia-China border. Credit: Turquoise Hill Resources

Tax dispute adds doubt to Oyu Tolgoi’s UG expansion

Turquoise Hill Resources’ (TSX: TRQ; NYSE: TRQ) second-quarter results were overshadowed by a tax dispute with the Mongolian government, among other concerns, relating to its Oyu Tolgoi gold–copper mine in the country’s South…


U.S. equities edge higher, July 14-18

The downing of a Malaysia Airlines passenger jet by suspected pro-Russian militants in Ukraine and Israel’s invasion of Gaza triggered a sell-off on July 17, but U.S. markets ended the trading week in positive territory, with the Dow…





A view of Rio Tinto's Simandou iron ore project in Guinea. Credit: Rio Tinto

Rio Tinto’s US$20B iron ore mine plan in Guinea

VANCOUVER — A decade after mega-miner Rio Tinto (NYSE: RIO; LSE: RIO; ASX: RIO) was awarded the world-class Simandou iron-ore concessions in Guinea, West Africa, it looks like the stage has been set for what would be the largest…


Dominion Diamond's majority owned Ekati diamond mine in the Northwest Territories. Credit: Dominion Diamond/Brosha Photography

Dominion Diamond’s sparkling start in fiscal 2015

Toronto-based Dominion Diamond (TSX: DDC; NYSE: DDC) reported a strong operational start to the year, with higher-than-expected diamond production, sales and average prices for its first quarter of fiscal 2015.


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