Barminco has won a $110 million contract for development services at MMG's Rosebery mine in Tasmania.
It will provide jumbo development work at the underground mine.
The initial contract will run for three years, with an option to extend for an additional two years.
Barminco will start operations in December, with a workforce of 85, extending boots on the ground to 96 workers in March next year.
The contractor previously worked at the site from 2001 to 2013.
Speaking on the contract award, Barminco CEO Peter Stokes said: "We are very pleased to be reinstated at the Rosebery mine. We see this contract win as a strong reflection of our leading position we hold in providing the most productive and efficient outcomes for clients."
It now holds the two largest underground mining contracts in Tasmania, with the other being underground development and production services at Bluestone Tin's Renison mine.
Barminco was also previously working at CMT's Mt Lyell mine.
This latest contract comes just two months after Barminco was awarded a $190 million, two year extension to its underground mining contract at Western Areas' Spotted Quoll and Flying Fox nickel mines.