RCR Tomlinson have been awarded three major mining contracts totalling around $125 million.
The largest contract is for work on GlencoreXstrata's Ernest Henry mine expansion.
The $70 million contract includes major mechanical, piping, electrical and instrumentation work across three packages and includes the installation of underground crushing and materials handling equipment, along with its associated infrastructure.
Work will begin immediately.
It also won an extension to its existing underground mine work at Newcrest's Cadia Valley operations.
In particular, the works for the West Crusher of Panel Cave 2.
It has also just won its first iron ore in-pit crushing and conveying (IPCC) plant design and construct award.
The work will see it provide the sizing plant for Rio Tinto's MESA J mining operations at Pannawonica in WA.
The contract's scope includes design, supply, manufacture, pre-assembly and site installation.
It will have a minimum production capacity of 12 million tonnes per annum and is expected to be completed by March 2015.
RCR's CEO Paul Dalgleish said the award for the in-pit ore sizing plant at Rio's Mesa J operations is a result of its investment in IPCC solutions.
"This project for Rio Tinto follows our long held commitment to developing in-pit mining and crushing solutions for the iron ore sector which is a significant differentiator for RCR," he said.