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.
Barmac Manufactured Sand (BMS) is a natural sand alternative often utilised for asphalt and concrete purposes. A coarse sand, BMS is heavily utilised in the production of asphalt, with as much as 45% of each asphalt tonne made up of BMS. It is a product in high demand.
Produced through a Vertical Shaft Impactor (VSI), the quarry rock is graded to produce the appropriately shaped angular particles.
BMS is also preferred by our concrete customers due to its reduced water absorption capacity. For this reason, Hunter Quarries prefers to supply BMS with its improved results in decreasing plastic shrinkage cracking when compared to the CMS alternative.