Sinosteel Corp, China’s largest iron ore trader, signed an iron ore purchase agreement with Australian mining firm Brockman Resources this week.

The agreement, with a potential value of $5.6bn, will last five years and help Sinosteel buy ten million tonnes of iron ore from Brockman every year.

Osisko Mining made a formal offer for a friendly takeover of Brett Resources.

The total value of the deal is $372m.

The Jinchuan Group will acquire a 49% stake in a joint-venture for $120m to exploit the Aktogay copper mine in Kazakhstan.

The $2bn Aktogay project has mining rights for 40 years and will yield 100,000t of copper a year.

BHP Billiton said it has completed the acquisition of Athabasca Potash.

This acquisition provides BHP Billiton with 100% control of the Burr project and various additional potash exploration properties in Saskatchewan, Canada.

Xinergy has completed the acquisition of the remaining 95% interest of Raven Crest Mining that Xinergy does not already own.

Raven Crest operates surface mines in Boone County, West Virginia and controls approximately 17 million tonnes of coal reserves.