Our companies

Thiess’ companies, investments and partnerships connect our clients with leading specialist services that are fully integrated with our core service offerings.

These are proven and offer the strength and rigour of already-aligned people, systems and processes, creating ready-to-mobilise capabilities that ensure excellence with certainty.

Our companies



MACA is an international contracting group providing services to the mining, infrastructure and construction sector industries. They provide tailored solutions to meet the needs of all their clients and end-users.

Thiess Rehabilitation

Thiess Rehabilitation offers world-leading mine rehabilitation services by miners, who are also environmental experts. This includes progressive mine rehabilitation, mine closure including infrastructure removal, abandoned mines, and contaminated land requirements.


FleetCo is a global dry hire equipment provider. They provide access to comprehensive plant hire and equipment ownership packages and innovative capital replacement solutions within Australia.

RTL Mining and Earthworks

Thiess’ 88 per cent investment, RTL Mining and Earthworks, provides mining, civil construction and heavy earthmoving plant hire services, as well as general and over-dimensional transport services from its base in the Latrobe Valley, Victoria, Australia.


PYBAR is a mining services provider with core competencies in metalliferous underground hard rock mining. Founded in 1993, their success is based on safe, rapid underground infrastructure development and consistent, reliable production. PYBAR delivers a range of projects, from large established mining operations to greenfield developments.

#Investments and partnerships

Mine Energy Solutions

Partnered with Mine Energy Solutions (MES) to introduce dual fuel retrofit technology to Thiess’ mining fleet and the industry. Through a phased introduction, the partnership will work to use locally sourced gas to displace diesel in large mining trucks using MES’s currently available and proven technology.


RWE provides Thiess guidance on an as-needs basis across the full suite of in-house mine design, equipment engineering, operations and maintenance services for open-pit continuous mining equipment (CME). They are the only global and vendor-independent full-service provider of CME, backed by their 60 plus years of technical and operational experience.


Thiess has been partnered with AECI under a strategic partnership since 2015. AECI is one of the world’s leading suppliers of explosives and initiating systems, developing ground-breaking blasting solutions and offering technical expertise to customise explosives to a mine’s specific conditions. In bringing together a supplier with Thiess, as an end user, clients are gaining considerable benefits from the team’s end-to-end expertise and confidence, whether via the secure supply chain for raw materials and products, or the safe and efficient application of blasting techniques in operations.

#Shareholder companies


Through our 60 per cent shareholder, CIMIC, Thiess leverages the capability of one of the world’s leading international contractors, giving our team access to best-in-class, complementary services.

CIMIC Group includes construction business CPB Contractors, including Leighton Asia and Broad, minerals processing company Sedgman asset solutions specialist UGL and public-private partnership arm Pacific Partnerships - all supported by their in-house engineering consultancy EIC Activities.

Elliot Advisors (UK) Limited

Elliott Investment Management L.P. manages approximately $55.2 billion of assets as of December 31, 2022. Founded in 1977, it is one of the oldest funds under continuous management.

The Elliott funds' investors include pension plans, sovereign wealth funds, endowments, foundations, funds-of-funds, high net worth individuals and families, and employees of the firm. Elliott Advisors (UK) Limited is an affiliate of Elliott Investment Management L.P.