Macmahon Holdings Limited engages in the process of surface mining, underground mining and mining support, and civil infrastructure services to mining companies in Australia and Southeast Asia. The company operates in four segments: Surface Mining, Underground Mining, International Mining, and Civil Infrastructure. It offers surface mining services, such as bulk and selective mining, mine planning and analysis, drill and blast, crushing and screening, fixed plant maintenance, water management, equipment operation and maintenance, technology, safety solutions; and underground mining services, including mine development and production, raise and production drilling, cable bolting, shotcreting, remote shaft lining, paste fill, shaft sinking and fit out; and engineering services, including shaft lining and maintenance, ore pass liners, winder refurbishment, conveying, crushing, materials handling, emergency egress systems, pump stations and rising mains, and site workshops and infrastructure. It provides mining support services comprising topsoil and overburden stripping, bulk earthworks, road design and construction, mine infrastructure and services, and train loading facilities; tailings storage facilities, camps and remote village accommodation, bridgeworks, rail and airport infrastructure, site infrastructure including workshops, buildings and site facilities, balance of plant works for renewable energy projects, including solar, wind, and battery installations; water infrastructure, such as dams, creek diversions, flood levies, and drainage structures; and revegetation, non-process infrastructure, and rehabilitation monitoring and maintenance. In addition, the company offers advisory and operational improvement solutions, which includes operator coaching and skills development, cultural change programs, and mental health program. The company was incorporated in 1963 and is headquartered in Perth, Australia.