After nearly 150 years of oyster habitat loss causing declines in fish number and water quality, Sydney Rock Oyster reef restoration Project aimed to re-establish oyster habitat throughout NSW estuaries.
In late 2020, Karuah East Quarry met a new milestone as they supplied 40,000 tones of ARTC ballast on time and to spec for the opening of Glencore’s United Wambo mine.