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Brookby Quarry has been in operation since 1940 to service the Auckland region.  Today it is a modern well-developed operation that is currently supplying 2.1 million tonnes of Greywacke per annum to the Auckland region and has existing capability of producing and supplying up to 5.1 million tonnes per annum that will contribute to Auckland’s rapidly growing urbanisation and resulting infrastructure needs.Brookby Quarry produces a wide range of high quality products including concrete aggregates, asphalt aggregates, sealing chip and construction aggregates.
Brookby’s total aggregate resource as determined by the Australasian Code for reporting Exploration Results, Mineral Resources and Ore Reserves (JORC Code) is 301 million tonnes (150 million tonnes of measured and consented resource and 151 million tonnes of indicated resource).  This resource will ensure continuity of high quality aggregate supply into the Auckland Market for at least the next 140 years at the current level of demand.