Macmahon has won a two year extension for its current work at Newmont's Waihi gold mine in New Zealand.
The $38 million contract will see Macmahon remain on site until March 2016.
Macmahon will continue to provide a full range of open cut mining activities, such as drill and blast, load and haul, crushing and conveying, and the construction of an engineered waste disposal dam at the Martha open pit.
Commenting on the win, Macmahon CEO Ross Carroll stated that "Macmahon has been operating on site at Waihi since 1998 and over that time we have consistently demonstrated our ability to provide ongoing value to our client's operation".
The contract extension will also provide ongoing security of employment for Mamahon's existing workforce, the company said, with Carroll adding "this extension gives our people the surety of employment that they are looking for and provides us with a strong base from which we can continue to grow the business in New Zealand".
Waihi consists of the Martha pit, the Favona and Trio underground mines, and its yet to start operation - the Correnso underground mine.
Last year Newmont was given the greenlight for its Waihi East underground gold mine.