Bumi Minerals reports increased reserve and resource from its Dairi zinc project
Friday, June 10 2011 - 07:30 AM WIB
The re-estimates of the mineral resources at all 3 deposits were completed in the 4th quarter of 2010 by the independent geological consultancy, CSA Global (Australia) Limited based on the geological interpretation and wireframe geological models provided by the DPM geologists.
The updated estimate of the combined resources (inclusive of reserves) at the 3 deposits shows a 25% increase from previously 20.1 million ton to 25.12 million ton at 10.1% Zn and 6% Pb.
| Sites | Combined Minerals Resources |
| Anjing Hitam | 8.11 Mt at 14.6% Zn, 9.1% Pb, and 12 Ag g/t |
| Lae Jahe | 16.18 Mt at 8.2% Zn, 4.5% Pb |
| Base Camp (shale hosted) | 0.49 Mt at 5.5% Zn, 5.7% Pb, and 10 Ag g/t |
| Base Camp (carbonate hosted) | 0.34 Mt at 4.2% Zn, 4.0% Pb, and 20 Ag g/t |
| Total Resource | 25.12 Mt at 10.1% Zn, 6.0% Pb |
In February 2011, the Mining Plus Pty. Ltd. Completed the Anjing Hitam Mining Study to update the earlier Underground Feasibility Study of July 2010 by Mining Plus and a November 2004 study by AMC Consultants Pty. Ltd.
The updated estimate was based upon the block model provided by CSA Global in October 2010 and revealed a 105% combined reserve increase from previously 5.4 million ton (Anjing Hitam site) to 11 million ton at 11.5% Zn and 6.8% Pb (Anjing Hitam and Lae Jahe sites)
| Sites | Combined Reserves | |
| Anjing Hitam | Proven | 4.95 Mt at 14.8% Zn, 9.1% Pb, 11.5 Ag g/t |
| Probable | 0.93 Mt at 11.3% Zn, 7.0% Pb, 10.1 Ag g/t | |
| Lae Jahe | Probable | 5.17 Mt at 8.4% Zn, 4.5% Pb, 3.3 Ag g/t |
Total Reserves |
11.05 Mt at 8.4% Zn, 4.5% Pb, 3.3 Ag g/t | |
Kenneth Farrell, the CEO of BRMS, said,? Another positive news from DPM on top of the recently issued Presidential Decree that supports Underground Mining in the protected forest area. The reserve and resource increase in our 80% owned DPM adds value to its zinc and lead concession and to BRMS on the consolidated basis.? (godang)