June 20 (Reuters) - Weststar Industrial Ltd WSI.AX :
* Weststar wins key Perth Airport rail line contract
* Contract was awarded to Precast Australia by firm Salini Impregilo
* New contracts are expected to represent additional revenue to company in excess of approximately $1 million
* Precast Australia has been awarded additional minor works under existing contracts by Saferoads Source text for Eikon: Further company coverage: WSI.AX