The state government has awarded the Worley Arcadis joint venture a major advisory contract for the design of Westport, the $7.2b port project in Cockburn Sound.
Global engineering firm Wood has won a two-year contract extension worth up to $US65 million ($A100 million) for work on Woodside Energy's North West Shelf gas facilities.
Jules Pemberton-led NRW Holdings has added to its growing workbook, after being awarded a $750 million mining services agreement with TEC Coal in Queensland.
Lendlease Construction, Built and Spanish company Sacyr Construction have been selected as preferred partners to build two major hospital buildings under an alliance contracting model.
WestStar Industrial Limited subsidiary SIMPEC has secured additional construction work with Tianqi Lithium Energy Australia at its lithium hydroxide processing plant in Kwinana.
Zoran Bebic-led Monadelphous has extended its working relationship with iron ore major BHP, after securing another significant contract worth $175 million.
The state government has awarded Henderson-based shipbuilder Echo Marine Group to build the first electric ferries in the state, for the Metronet on Swan project.
Listed mining services contractor and miner Develop Global has secured a $200 million contract from global miner OceanaGold at its project in New Zealand.
Macmahon Holdings shares reached 61 cents early on Wednesday - their highest in 13 years - following the execution of two contracts with an overall value of $843 million.
The proliferation of data centres has boosted Southern Cross Electrical Engineering shares to a fresh high, despite a disappointing arbitration loss earlier this month.
Wesfarmers and SQM's Covalent Lithium has engaged Iron Mine Contracting for more than three years' worth of mining service work at the Mt Holland operation near Southern Cross.
Liontown has shaken hands on an offtake agreement with mammoth Chinese battery materials manufacturer Canmax Technologies for spodumene sourced from Kathleen Valley.
NRW Holdings' recent acquisition of Sydney-based Fredon Industries is already beginning to bear fruit, following a series of data centre contract wins.
ASX-listed WestStar Industrial's engineering subsidiary SIMPEC has secured a $4.5 million contract for work at Fortescue's Solomon power station in the Pilbara.
South32 has engaged the state's largest Indigenous-owned contractor Warrikal for maintenance services at its Worsley Alumina refinery under a seven-year contract.
SRG Global has secured a suite of contracts worth $650 million from blue-chip clients such as Fortescue, Wesfarmers, and Alcoa, spanning projects on home soil and in New Zealand.
Perth Airport-based contractor Macmahon Holdings has increased its Indonesian presence, after securing an underground mining contract with PT Freeport Indonesia.
Industrial services company WestStar Industrial has booked a series of contracts valued at $40 million through its wholly owned subsidiary, Alltype Engineering.
Downer has added $750 million to its forward work books after signing a 15-year maximum term agreement with Chevron for maintenance and support services.
Shares in Monadelphous are rallying after the engineering firm advised its anticipating a stronger full-year revenue result on bumper demand, while also booking extra work with BHP and Rio Tinto.