Osborne Park-based Decmil Group has won a $75 million contract with BHP Billiton to upgrade and expand accommodation for the miner's existing operations and its planned South Flank iron ore project near Newman.

Osborne Park-based Decmil Group has won a $75 million contract with BHP Billiton to upgrade and expand accommodation for the miner's existing operations and its planned South Flank iron ore project near Newman.