To: Mr.Staya who wrote (8469 ) 1/28/1998 10:33:00 AM From: Mr.Staya Read Replies (1) | Respond to of 14627
Drilling at Diablillos Pacific Rim Mining Corp PFG Shares issued 18,271,370 Jan 27 close $1.50 Wed 28 Jan 98 News Release Ms Samantha Cramer reports A 7,000m reverse circulation drilling program on the Oculto zone of the Diablillos property in Northwestern Argentina has begun. The drilling is designed to infill the northeast extension of the Oculto gold silver deposit. Barrick's first assay results are anticipated at the earliest in April. Upon completion of this drilling campaign in early May, Barrick will conduct an internal resource calculation. Diablillos is Pacific Rim's most advanced project in northwestern Argentina. Diablillos is owned by a company in which Pacific Rim owns an indirect 30% interest and Barrick owns an indirect 70% interest. To maintain its interest, Barrick must make a production decision by June 26 2000 or elect to make exploration expenditures of US$4 million per year after that date, until such a production decision is made. A metallurgical testing program, designed under Barrick's direction to clarify the potential recovery and processing details of the deposit, is underway. Core drilled in late 1997 is being combined into three composites on the basis of the sulphur content of the host. There are three columns tests being conducted on each composite at three different crush sizes. Additionally, the metallurgical samples are being used to conduct screen analyses and bottle roll tests using only water to determine the water-soluble silver content. The testwork is being conducted by Lakefield Research Limited in Santiago, Chile. Previous cyanide leach tests had a median recovery of 88% for gold and 83% for silver. Pacific Rim will postpone its independent resource calculation originally planned for the first quarter until the 7,000 metres of new drilling is completed. The July 1997 resource calculation contains 91 million oz of silver and 286,000 oz of gold. Since that time, drilling has increased the strike length of the deposit by 38% to the northeast. The current 7,000m drill program is designed to provide further confidence in the northeast extension so that these additional oz can be fully reflected in the resource base at Oculto. Upon receipt of the updated resource calculation and results of the metallurgical testwork, Pacific Rim will have sufficient information to conduct an independent scoping study which should be completed in the second quarter. (c) Copyright 1998 Canjex Publishing Ltd. canada-stockwatch.com