GR Engineering secures contract for Stage 2 King of the Hills upgrade

Monica Gameng   |   June 15, 2025
Leonora Operations (cr: Vault Minerals Limited)

GR Engineering Services has announced that it has been awarded a variation of its existing Engineering, Procurement and Construction (EPC) contract with Greenstone Resources (WA) Pty Ltd for the delivery of the Stage 2 upgrade of the King of the Hills Operations in Western Australia. 

Greenstone Resources is a wholly owned subsidiary of Vault Minerals Limited. 

The new contract award is valued at $79 million, bringing the total contract value for this project to $155 million. 

“We are pleased to continue working with Vault at their King of the Hills processing facility. We see the award of this additional stage of works as a strong endorsement of GR Engineering’s performance in the delivery of the work that has been performed to date. We look forward to continuing to work with the Vault team on the successful and safe delivery of this project,” GR Engineering Services Managing Director Tony Patrizi said. 

King of the Hills is part of Vault Minerals’ Leonora Operation in the Goldfields region, about 900 kilometres north-east of Perth and 25 kilometres north of Leonora. 

The scope of works under the contract award includes the design, procurement, construction, installation and commissioning of the upgrade to the King of the Hills processing plant. This stage of the upgrade will increase the annual throughput of the wet processing plant to 7.5Mtpa. 

GR Engineering Services will commence works immediately. 

Stage 2 will dovetail with the first stage of the upgrade, which is currently under construction. 

Source: GR Engineering Services; Australian Mining; Vault Minerals Limited 

New call-to-action

Monica Gameng
As Felix's Marketing Assistant since 2015, Monica is responsible for researching and sharing new and progressing projects within the construction and mining sectors in Australia. It's no surprise that Monica has her finger on the pulse of Australian major projects given she has produced more than 1,000 posts. She truly is an industry expert.
Follow me:

Recent Articles

NSW Govt approves Inland Rail Narrabri to North Star Phase 2 project
Projects, NSW
NSW Govt approves Inland Rail Narrabri to North Star Phase 2 project

Delivery of the second phase of Inland Rail in New South Wales will soon get underway as the State Government gives the green light to the Narrabri to North Star Phase 2 project. 

New significant milestones reached on proposed Northern Water Project
Projects, SA
New significant milestones reached on proposed Northern Water Project

Two significant milestones have been achieved on the proposed Northern Water desalination plant in South Australia. 

Plans unveiled for major upgrade to NSW Rawson Rd level crossing
Projects, NSW
Plans unveiled for major upgrade to NSW Rawson Rd level crossing

The New South Wales Government has unveiled plans for a major upgrade at Rawson Road and Railway Street in Woy Woy to make one of the Central Coast’s level crossings safer. 

Get the latest project news

Formerly known as the PlantMiner blog, Felix Project News is Australia's top 10 Construction blog. Join thousands of construction and mining pros getting the best content right in their inbox.
  • updates on Australia's pipeline of state and federal projects
  • fresh contract awards from major contractors and builders

If you're looking to contact us about other matters, please contact us.