Asiamet Resources Limited (LON:ARS) (CVE:ARS) has announced positive results from the column leach test work being undertaken as part of the Bankable Feasibility study on the Beruang Kanan Main (BKM) copper deposit in Kalimantan, Indonesia.
In a statement, the AIM-listed firm said that, following a 270-day leach cycle, metallurgical results obtained from the long column (6-metre) programme, support the results previously reported in the short column test work released on 19 December 2017.
The group said soluble copper recoveries from the coarse crush size (P80=19mm) ranged from 72% to 81% for the dominant material types defined at BKM.
It added that these recoveries represent a 4% improvement, on average, over the recoveries obtained from the short column programme.
Asiamet said the long column results confirm the expectation that utilising a finer crush size will deliver recoveries of 80% to 85% for the dominant material types, as observed in the short column programme.
it added that the majority of the soluble copper, as determined by the sequential copper analysis, was recovered and the soluble copper present in the residual (post-leaching) material for most columns was less than 0.15%.
Peter Bird, Asiamet's chief executive officer commented: "The Feasibility Study remains on track for delivery by the end of H1 2018 and we will continue to communicate ongoing results as they become available.”
He added: “The BKM Project remains extremely well positioned as one of the few advanced new copper projects moving towards production against a backdrop of a projected net short supply balance and rising copper prices."