Sedgman has won a renewal for crushing and screening services at the Mount Isa mines.
The contract will now extend operations at the site until August next year.
Sedgman has been working at the site since 2006.
No valuation was given for the contract extension.
The facility itself consists of two separate crushing circuits capable of processing 400 tonnes per hour each.
It is slated to crush around 3.2 million tonnes of lead and zinc ore from the Black Star open cut mine, and incorporates a three stage circuit that reduces material from a maximum feed size of 800 mm to a final product size of 14mm.
Speaking on the win, Sedgman CEO Peter Watson said the company is delighted to renew services at the site.
Sedgman will employ around 19 staff on site, supported by off-site technical teams in Brisbane and Townsville.