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The primary activities of Conundrum Holdings are quarrying and the manufacture of pre-mixed concrete.

Our Northern Quarries site in O'Herns Road, Epping is a basalt quarry producing high quality concrete aggregates and crushed rock including road base.

At our Stawell Quarry site, located in western Victoria, the hornfels source rock is also used to produce concrete aggregates and crushed rock including road base. Other material such as rail ballast, beaching materials and road sealing aggregates are produced at this site.

Wim Mix concrete, located in Horsham, produce all standard concrete grades to Australian Standards as well as specialising in kerb mix, exposed aggregate mixes and coloured concrete.

Our McKenzie Creek Quarry is located to the south of Horsham along the Henty Hwy, with quartzite as its source rock, that site however is temporarily closed for sales.