Materials Handling

Wear Solutions

Wear Solutions


Power Generation


About HMA Group Divisions

Formed in 1966, Halley & Mellowes represents an impressive list of internationally respected companies and manufactures under licence to a number of these companies. We also manufacture a range of products and equipment developed and designed by our own engineers. In 1990 an employee owner group was formed and acquired 50% of the company from co-founder Mike Mellowes. These shareholders span a diverse section of the company and underwrite the efficient function of the Halley & Mellowes Group.

The Halley & Mellowes Group of Companies (The HMA Group) manufactures, services and sells a wide range of capital plant equipment to a diverse range of industries. This includes the mining sector, processing, material handling, power generation and oil and gas refineries. To these sectors we provide services such as wear resistant linings, material handling solutions, flow control solutions, industrial instrumentation solutions, geotechnical instrumentation, boiler cleaning technology and engineering consultancy services, amongst others.

The group was originally comprised of Halley and Mellowes, Greenbank Terotech, Ceramatech, POGC Sensor Technology, Diamond Power Australia, Valveco, Techniplan, Measurement Resources, Geotechnical Systems Australia, Select Transmission & Motors Australia and Uretech. These merged to form the following divisions: HMA Materials Handling comprising of Halley & Mellowes and Techniplan, HMA Wear Solutions comprising of Greenbank Terotech, Ceramatech and Uretech, HMA Instrumentation comprising of POGC Sensor Technology and Measurement Resources, HMA Power Generation comprising of Diamond Power Australia, HMA Flow & Industrial comprising of Vavleco and Select Transmission & Motors Australia and HMA Geotechnical comprising of Geotechnical Systems Australia.

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HMA Group Timeline

1966 – Halley & Mellowes formed in 1966 by Keith Halley & Mike Mellowes

1982 – Incorporation of Greenbank Terotech

1984 – Diamond Power International purchase of Keith Halley’s shareholding

1985 – Incorporation of Diamond Power Australia

1990 – Employee Owners Group formed to acquire Mike Mellowes’ shareholding

1999 – Purchase of POGC Sensor Technology business

2000 – Purchase of Valveco business

2006 – Purchase of Ceramatech and incorporation into Greenbank business

2007 – Purchase of CVC and incorporation into Valveco business

2007 – Purchase of 50% of Techniplan business

2009 – Purchase of Measurement Resources business

2009 – Purchase of remaining 50% of Techniplan

2011 – Purchase of Geotechnical Systems Australia business

2013 – Opening and expansion of office in Indonesia

2015 – Purchase of Select Transmission & Motors Australia business

2016 – Merger of companies to HMA divisions

2016 – Purchase of Uretech business in South Africa

2016 – 100% Employee ownership

2018 – Established South African Wear Solutions factory

2019 – Upgrade of Perth manufacturing facility

2020 –  Upgrade of Mackay manufacturing facility