NRW's civil division will be responsible for civil construction and earthworks at Queens.
The additional fleet will include Hitachi EX5600 and EX3600 excavators.
The acquisition would build on NRW's recent acquisitions.
Dalgaranga is expected to give up about 400,000oz over its remaining LoM.
NRW is set to continue its purple patch with a strong pipeline of work in the order books.
NRW secured a five-year extension with Stanmore for the Isaac Plains East project in Queensland.
Contractor hits back at speculation on its doubled debt load.
NRW to refurbish and upgrade BHP's airport at Olympic Dam.
NRW will carry out earthworks for FMG at Iron Bridge.