Kootenay Silver Inc. is pleased to announce that it has signed a contract with TLASA OBRAS MINERAS, S. DE R.L. DE C.V. to rehabilitate the historic underground workings of the F Vein at the Columba Silver Project in Chihuahua State, Mexico. Initial work will assess the ability to gain access to the underground workings and begin dewatering the old mine. Clearing and timbering of an adit (entrance to an underground mine) is underway with the objective of gaining access to the main shaft and a secondary inclined shaft to begin dewatering and evaluating old mine workings for rehabilitation.
James McDonald, CEO & President, comments “Getting into the old mine workings and being able to see the F Vein in the old adit is a very exciting step forward for the Columba property and one more step closer to evaluating the resource and economic potential of the property. To the best of our knowledge this is the first time in 40 years work within the mine has been conducted in the upper levels and likely 100 years since anyone was in the lower levels.”
Access to the old working will provide valuable information on the extent of historic mining and development, vein widths and grades, wall rock conditions and water flows. Additionally, this will allow for more cost-effective infill and expansion, drilling to greater depths, and provide bulk sample for metallurgical work.
Detailed mapping and sampling will occur concurrently with rehabilitation work after safe and secure access to the F Vein is established. This mapping and sampling will aid in accurate modeling and resource work for the F Vein.
Work is expected to take approximately 4 months to complete barring any major obstacles. There is no historic data available to indicate the current condition of the underground workings and if there are any major collapses. Due to these uncertainties, every advancement of the program will assess our ability to continue the rehabilitation of the old mine workings.
Meanwhile drilling is ongoing on other vein systems in Columba as part of the current 5,000-meter core drill program. To date results for 12 holes have been released (CDH-21-086 to CDH-21-096) for a collective 96 holes (including the 2019 and 2020 drill programs). More results are to be released as assays are received and interpreted by the Company.
The Kootenay technical information in this news release has been prepared in accordance with the Canadian regulatory requirements set out in National Instrument 43-101 (Standards of Disclosure for Mineral Projects) and reviewed and approved on behalf of Kootenay by James McDonald, P.Geo, President, CEO & Director for Kootenay, a Qualified Person.
Sampling and QA/QC at Columba
All technical information for the Columba exploration program is obtained and reported under a formal quality assurance and quality control (“QA/QC”) program. Samples are taken from core cut in half with a diamond saw under the direction of qualified geologists and engineers. Samples are then labeled, placed in plastic bags, sealed and with interval and sample numbers recorded. Samples are delivered by the Company to ALS Minerals (“ALS”) in Chihuahua. The samples are dried, crushed and pulverized with the pulps being sent airfreight for analysis by ALS in Vancouver, B.C. Systematic assaying of standards, blanks and duplicates is performed for precision and accuracy. Analysis for silver, zinc, lead and copper and related trace elements was done by ICP four acid digestion, with gold analysis by 30-gram fire assay with an AA finish. All drilling reported is HQ core and has been contracted to Globexplore Drilling from Hermosillo, Mexico.