- Drill Hole KMDD0039 records 4.05 m at 5.00 g/t Au, 2 g/t Ag and 0.22% Cu (5.36 g/t AuEq) plus 3.6 m at 12.99 g/t Au, 68 g/t Ag and 0.92% Cu (15.27 g/t AuEq) plus 2.6 m at 4.91 g/t Au, 13 g/t Ag and 0.80% Cu (6.30 g/t AuEq)
- Drill Hole KMDD0043 records 7.7 m at 5.84 g/t Au, 4 g/t Ag and 0.14% Cu (6.10 g/t AuEq) plus 1.8 m at 2.81 g/t Au, 22 g/t Ag and 3.92% Cu (9.09 g/t AuEq) plus 10.1 m at 3.70 g/t Au, 4 g/t Ag and 0.24% Cu (4.13 g/t AuEq)
- Drill Hole KMDD0041 records 7.7 m at 7.16 g/t Au, 14 g/t Ag and 0.14% Cu (7.55 g/t AuEq)
- Drill Hole KMDD0045 records 5.26 m at 13.77 g/t Au, 5 g/t Ag and 0.07% Cu (13.93 g/t AuEq)
K92 Mining Inc. (“K92”) is pleased to announce results from the continuing grade control and exploration drilling of the Kora North Extension.
The results reported include three holes from Diamond Drill Cuddy One (DDC1), and four holes from Diamond Drill Cuddy Two (DDC2), located approximately 125 metres along strike DDC1. All holes drilled from DDC2 have recorded wide intersections of the K1 vein in addition to the main Kora North vein (K2), except KMDD0041 which was stopped short of the K2 vein.
Results have included Hole KMDD0039 which recorded 4.05 m at 5.00 g/t Au, 2 g/t Ag and 0.22% Cu (5.36 g/t AuEq) plus 3.6 m at 12.99 g/t Au, 68 g/t Ag and 0.92% Cu (15.27 g/t AuEq) plus 2.6 m at 4.91 g/t Au, 13 g/t Ag and 0.80% Cu (6.30 g/t AuEq) and hole KMDD0043 which recorded 7.7 m at 5.84 g/t Au, 4 g/t Ag and 0.14% Cu (6.10 g/t AuEq) plus 1.8 m at 2.81 g/t Au, 22 g/t Ag and 3.92% Cu (9.09 g/t AuEq) plus 10.1 m at 3.70 g/t Au, 4 g/t Ag and 0.24% Cu (4.13 g/t AuEq).
The K1 results are considered particularly significant as all five holes drilled to date from DDC2 have recorded consistently wide intersections varying from 4.05 metres to 8.4 metres, while grades have varied from 5.36 g/t AuEq to 13.93 AuEq. Importantly, the most southerly hole drilled from DDC1 (KMDD0024) recorded a K1 intersection of 11.5 metres at 7.11 g/t Au, 12 g/t Ag and 0.0.32% Cu (7.76 g/t AuEq).
In addition, in two of the holes drilled from DDC2 a third vein appears to be developing between K1 and K2 veins with intersections of 3.6 metres at 12.99 g/t Au, 68 g/t Ag and 0.92% Cu (15.27 g/t AuEq) recorded in hole KMDD0039 and 1.8 metres at 2.81 g/t Au, 22 g/t Ag and 3.92% Cu (9.09 g/t AuEq) recorded in hole KMDD0043. The presence of 3 veins is consistent with the interpreted geology reported in the main Kora deposit to the south, which has up to four veins reported.
John Lewins, K92 Chief Executive Officer and Director, states,
“The recent drilling results and especially those from DDC2 have continued to build our confidence in the continuity of the North Kora Vein System. The results from the southern holes from DDC1 and all the holes drilled from DDC2 have identified the K1 vein as having significant potential. The identification of a third vein further enhances the potential of the system and appears consistent with the geology encountered in the main Kora deposit to the south which has up to four veins present.
The grade control drilling from DDC 1 has now been successfully completed and this rig is being relocated to drill a northern target for an extension of the K2 vein parallel to Irumafimpa, identified in the results previously reported for hole KMDD0035. Following the completion of this program, drilling is scheduled to commence on the underground diamond drilling exploration program. This program which is expected to take approximately six months to complete will target an area of approximately 600 metres on strike by 500 metres on dip between Irumafimpa and the known Kora deposit.
Table 1 and 2 below provide a summary of the results from the latest diamond grade control drill holes drilled into the Kora North Vein system. Table 1 provides a summary of the significant intercepts from the hole, while Table 2 provides details of collar location and hole orientation.
TABLE 1.0 KAINANTU GOLD MINE – SIGNIFICANT INTERCEPTS FROM KORA UNDERGROUND DIAMOND DRILLING
|Hole_id||From (m)||To (m)||Interval (m)||True width (m)||Gold g/t||Silver g/t||Copper %||Gold equivalent|
Gold Equivalent uses Copper price – US$2.90/lb; Silver price US$16.5/oz and Gold price of US$1300/oz
TABLE 2.0 KAINANTU GOLD MINE – COLLAR LOCATIONS FOR KORA UNDERGROUND DIAMOND DRILLING
|Hole_id||Collar location||Collar orientation||EOH depth|
|Local north||Local East||mRL||Dip||Local||(m)|
The current Kora/Eutompi inferred resource, as defined by previous drilling to date, is 4.36 million tonnes at a grade of 7.3 g/t Au, 35 g/t Ag and 2.23 per cent Cu, or 11.2 g/t gold equivalent (see attached table) and is open for expansion at depth and in both directions along strike.
K92 has filed and made available for download on the company’s SEDAR profile a technical report titled “Independent Technical Report, Mineral Resource Update and Preliminary Economic Assessment of Irumafimpa and Kora Gold Deposits, Kainantu Project, Papua New Guinea,” with an effective date of March 2, 2017, that provides additional information on the geology of the deposits, drilling and sampling procedures, lab analysis, and quality assurance/quality control for the project, and additional details on the resource estimates.
The PEA estimates for Kora, based on the current resource estimates (4.36 million tonnes of 7.3 g/t Au, 35 g/t Ag and 2.23 per cent Cu):
- Over a nine-year operating life, the plant would treat 3.2 million tonnes averaging 7.1 g/t Au, 25 g/t Ag and 1.7 per cent Cu (9.3 g/t AuEq (1));
- This would generate an estimated positive cash flow of $537-million (U.S.) using current metal prices if 15-metre levels are used in mining; if 25-metre levels are used, then net cash flows are estimated as $558-million (U.S.); this cash flow includes conceptual allowances for capital;
- Production of an estimated average of 108,000 AuEq (1) ounces per annum over an eight-year period from year 2 through to year 9;
- An estimated pretax net present value (NPV) of $415-million (U.S.) for 25-metre levels, or $397-million (U.S.) for 15-metre levels, using current metal prices, exchange rates and a 5-per-cent discount;
- An estimated after-tax NPV of $329-million (U.S.) for 25-metre levels, or $316-million (U.S.) for 15-metre levels, using current metal prices, exchange rates and a 5-per-cent discount;
- Initial capital cost is estimated to be $13.8-million (U.S.), including the $3.3-million (U.S.) for the plant upgrade identified in the Mincore scoping study, but excluding the proposed Kora exploration inclines and diamond drilling; sustaining capital cost is estimated to a further $64-million (U.S.) spent over the life of the Kora mining for 25-metre levels, or $83-million (U.S.) for 15-metre levels;
- Operating cost per tonne is estimated to be $125 (U.S.) per tonne for 25-metre levels, or $126 (U.S.) per tonne for 15-metre mining levels;
- Excluding initial capital expenditure of $14-million (U.S.), cash cost is estimated to be $547 (U.S.) per ounce AuEq (inclusive of a 2.5-per-cent net smelter return (NSR) royalty) and all-in sustaining cost (AISC) of $619 (U.S.) per ounce AuEq for 25-metre mining levels, or $549 (U.S.) per ounce (inclusive of a 2.5-per-cent NSR royalty) and AISC of $644 (U.S.) per ounce AuEq for 15-metre mining levels.
Metal prices used were $1,300 per ounce for gold, $18 (U.S.) per ounce for silver and $4,800 per tonne for copper.
(1) Gold equivalent calculated on above metal prices.
Kora remains open for expansion in every direction and strongly mineralized at the extent of all drilling.
The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the PEA will be realized. The technical report contains a full description of all underlying assumptions relating to the PEA. Mineral resources that are not mineral reserves and do not have demonstrated economic viability.
TABLE 3.0 IRUMAFIMPA AND KORA/EUTOMPI RESOURCES
|Resource by Deposit and Category|
M in Table is millions. Reported tonnage and grade figures are rounded from raw estimates to reflect the order of accuracy of the estimate. Minor variations may occur during the addition of rounded numbers. Gold equivalents are calculated as AuEq = Au g/t + Cu%*1.52+ Ag g/t*0.0141.
K92 Mine Geology Manager and Mine Exploration Manager, Mr. Andrew Kohler, PGeo, a qualified person under the meaning of Canadian National Instrument 43-101, has reviewed and is responsible for the technical content of this news release. Data verification by Mr. Kohler includes significant time onsite reviewing drill core, face sampling, underground workings and discussing work programs and results with geology and mining personnel.