A subsidiary of Leighton Holdings Ltd (ASX:LEI) has won an A$800 million (US$764.56 million)-plus contract from Chevron Australia to deliver the civil and underground works for the Gorgon gas project in Western Australia.

The contract win for Leighton Contractors Pty Ltd is in addition to the company's current work on the Gorgon Project where Leighton and fellow construction and engineering firm Saipem are completing works on a 2.1 kilometer LNG jetty and marine structures.

The latest contract covers earthworks, in-situ and precast concrete and underground services, including drainage, piping and electrical and instrumentation cabling that will be installed within the LNG plant site.

Work will start immediately and is expected to be completed by mid-2013.

Leighton Contractors was previously awarded a contract in consortium with Saipem worth A$1.1 billion for the design, material supply, fabrication, construction and commissioning of the LNG jetty and marine structures, and the design, fabrication and installation of jetty pre-assembled racks.

"(Gorgon) being the largest single resources project in Australia, we will be drawing on our pool of skilled workers as well as new talent to meet the peak target of 1,500 employees across both Leighton contracts," the general manager of Leighton Contractors, Western Region, Ray Sputore, said.

Leighton shares were 25 cents higher at A$11.90 on Thursday.

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