Leighton Asia, a Leighton Group company, has been awarded a A$1.1bn ($950m) contract to expand its mining services at the MSJ coal mine in Indonesia.

The contract will run for six years.

Leighton has been operating at the mine since May 2004 after signing an initial three-year contract.

The owner of the mine, PT Mahakam Sumber Jaya, has a crusher, blending and load-out facility at the site.