April 15 (Reuters) - Rio Tinto (LON:RIO) Ltd RIO.AX :
* Rio Tinto and Sinosteel extend Channar Mining Joint Venture RIO.AX
* "This extension will see 30 million tonnes of iron ore supplied into the joint venture"
* Channar joint venture extension will enable sales of up to 70 million tonnes of iron ore to sinosteel corp over next five years
* In a separate agreement, Rio Tinto will sell up to 40 million tonnes of iron ore to Sinosteel between 2016 and 2021
* Source text for Eikon ID:nASX3NtVnS