Here's hope ---- BLACK HAWK MINING INC. (TSE-BHK) is pleased to report the intersection of bonanza and high-grade assays from drilling completed in December 1999 at the 225 km2 Manantial Espejo silver-gold project located in southern Argentina. Seventeen diamond drill holes totalling 1,416 metres were completed on six veins. Most holes successfully tested new targets and results, together with further drilling, are expected to add to the previously reported resource of 89.3 million ounces of silver-equivalent.
The best results included T-124 which intersected over 1.2 kilograms per tonne of silver-equivalent over 5.9 metres (or 36.0 ounces per ton over 19.4 feet), including 12.7 kilograms per tonne over 0.5 metres (or 372 ounces per ton over 1.7 feet); T-131 which intersected over 2.9 kilograms of silver-equivalent per tonne over a width of 4.1 metres (or 86.4 ounces per ton over 13.5 feet); and T-132 which intersected over 1.5 kilograms of silver-equivalent per tonne over a width of 1.2 metres (or 45.2 ounces per ton over 3.9 feet).
Veta Karina is the only vein system that was previously drilled. In the most recent program, extensions and a zone parallel to Veta Karina were tested by six drill holes. Intersections included several high-grade continuations of known mineralization and discovery of a new parallel vein, the 9K Vein, with enriched oxide mineralization. Holes T-123 and T-124 confirmed the continuity of Veta Karina mineralization at depth. T-123 intersected 902 grams of silver and 8.6 grams of gold over 2.0 metres (40.2 ounces of silver-equivalent per ton). T-124 intersected 557 grams of silver and 8.2 grams of gold over 3.3 metres (29.4 ounces of silver-equivalent per ton). The western extension of Veta Karina was tested by T-125 and T-126. Although both holes intersected low-grade mineralization at shallow depths, they confirm that mineralization extends westward and analysis of host rocks and mineralization indicates strong potential for high-grade mineralization at depth.
T-124 also intersected a previously unrecognized parallel zone, the 9K Vein, which averaged 913 grams of silver and 5.83 grams gold per tonne over 5.9 metres (36.0 ounces of silver-equivalent over 19.4 feet). This included a 0.5 metre interval grading 9,350 grams of silver and 61.3 grams of gold per tonne (371.6 ounces of silver equivalent per ton over 1.7 feet). Step-out holes drilled 30 metres on either side of T-124 cored leached vein material. T-138, the western step-out, intersected 0.7 metres of remnant mineralization grading 315 grams of silver and 2.1 grams of gold per tonne (12.6 ounces of silver-equivalent per ton over 2.3 feet). The 9K Vein remains open at depth.
The 1999 drilling program also targeted five other new veins. Veta Sol is located 200 metres north of Veta Karina and has the same apparent structural control. Three holes tested this new target of which T-127 and T-129 returned moderate to high-grade mineralization over narrow widths. Silver grades appear to improve with depth and interpretation suggests good potential for improvement in vein thickness and grades below these intersections. Maria Este was tested with a single hole which intersected a 1.6-metre vein with moderate grades. Additional field work will be required to assess the significance of this hole.
Veta Marta, located two kilometres northeast of Maria Este, is a new vein which was tested with a single drill hole. T-131 intersected several high-grade zones, including a 4.1 metre intersection averaging 1,160 grams of silver and 32.7 grams of gold per tonne (86.4 ounces of silver-equivalent over 13.5 feet). Within this intersection was a 1.3 metre sample which graded 2,566 grams of silver and 73.1 grams of gold per tonne (192 ounces of silver-equivalent over 4.3 feet). Veta Marta has been mapped on surface for several hundred metres. Veinlet and quartz-filled breccia along strike of the vein indicate potential for an additional one kilometre of mineralization.
The Candelaria Extension is another newly discovered zone on the western side of the large property. Two holes tested high-grade mineralization found on surface. T-132 intersected a 1.2 metre-wide vein grading 1,537 grams of silver per tonne (45.2 ounces of silver-equivalent per ton over 3.9 feet). Additional work will follow up this intersection.
Samples were prepared by Bondar-Clegg & Co. Ltd. at its office in Mendoza, Argentina and sent for assay at its lab in Santiago, Chile.
The Candelaria Zone was tested with four drill holes. Most of these holes intersected narrow bands of moderate to high-grade mineralization, indicating that the zone pinches below surface. A structural analysis is planned to determine if there is potential for the vein to flatten and widen with depth.
This program clearly demonstrated the property's significant potential to host additional veins with high-grade mineralization. It also showed that some veins contain small tonnages of bonanza-grade supergene mineralization. Future work programs will focus on delineating these zones as well as identifying additional targets.
Black Hawk owns 80% of the Manantial Espejo project. The remaining 20% portion is held by a subsidiary of Barrick Gold Corporation ("Barrick"). Upon completion of a positive feasibility study, Barrick must elect to either sell its interest to Black Hawk or increase its interest to 40% based on predetermined prices. Silver Standard Resources Inc. has an option to acquire 50% of Black Hawk's share in the Manantial Espejo project and is the operator.
Black Hawk Mining Inc. is a gold mining company with two mines, the Keystone Gold Mine in Manitoba and El Limon Mine in Nicaragua. These two mines produced a total of 117,000 ounces of gold in 1999. The company also holds exploration properties in Manitoba and Nicaragua as well as in northern Ontario, Maine and British Columbia. Black Hawk is listed on The Toronto Stock Exchange under the symbol BHK.
A map showing the location of recent drill holes, is available by fax on request (416) 363-2911. See accompanying page for a tabular summary of drill results.
For further information please contact:
Mr. Michael Gareau Vice President, Exploration Tel. (416) 363-6268
Mr. Garth A.C. MacRae President and Chief Executive Officer Tel. (416) 365-5657 |