Abigroup has engaged Aquenta Consulting to prepare a commercial tender for the proposed Caval Ridge Mining Project to be operated by the BHP Billiton/Mitsubishi Alliance (BMA).The approximate $300M Project scope includes 14,000,000m³ of bulk earthworks, 20km of access and haul roads, 10 kilometres drainage and a major river diversion. When operational, the mine will produce 5.5 million tonnes per annum.