Omya Australia Pty Limited is 100% owned by Omya AG, one of the world’s largest and most experienced producer of ground calcium carbonates (GCC). The company operates three limestone quarries and four mineral processing plants producing within Australia.

Omya Australia employs over 100 people and has processing plants in Bathurst, Moss Vale, Bajool, and most recently a state of the art plant in Geelong. Omya Australia has developed a reputation in relation to its quarry sites and processing plants for being proactive in environmental matters and setting an outstanding example to others in the mineral processing industry.

Omya Australia's head office is in Sydney, and in addition there are sales offices and warehouses in Brisbane, Melbourne, Adelaide and Perth. The sales staff are technically qualified personnel with backgrounds in the plastics, surface coatings and minerals industries.

 In Australia, Omya Australia is the principal manufacturer and supplier of calcium carbonate to a range of manufacturing industries. ​