Discovery Intercepts 197 g/t AgEq over 41 m in Feasibility Study Drilling at Cordero

TORONTO, May 24, 2023 (GLOBE NEWSWIRE) -- Discovery Silver Corp. (TSX: DSV, OTCQX: DSVSF) (“Discovery” or the “Company”) is pleased to announce results from Feasibility Study drill holes on its flagship Cordero silver project (“Cordero” or “the Project”) located in Chihuahua State, Mexico. These holes consist of reserve expansion drilling and will be incorporated in a Feasibility Study in conjunction with a resource update planned for the first half of 2024.

Highlight intercepts from this current set of drill holes include:

  • 41 m averaging 197 g/t AgEq1 (63 g/t Ag, 0.09 g/t Au, 1.2% Pb and 2.7% Zn) from 386 m and 8 m averaging 416 g/t AgEq1 (195 g/t Ag, 0.23 g/t Au, 2.2% Pb and 4.1% Zn) from 79 m in the core of the South Corridor in hole C22-688.
  • 37 m averaging 139 g/t AgEq1 (58 g/t Ag, 0.05 g/t Au, 0.8% Pb and 1.5% Zn) from 236 m and 104 m averaging 86 g/t AgEq1 (37 g/t Ag, 0.04 g/t Au, 0.3% Pb and 1.1% Zn) from 91 m in hole C22-705; these intervals were in the southern portion of the South Corridor within the reserves pit.
  • 51 m averaging 105 g/t AgEq1 (51 g/t Ag, 0.06 g/t Au, 0.7% Pb and 0.9% Zn) from 63 m in hole C22-697 in the southern portion of the South Corridor.

Tony Makuch, CEO, states: “Our Feasibility Study drilling continues to demonstrate the potential to grow reserves at Cordero whilst building further confidence in the underlying resource model. This drill program is nearing completion upon which drilling will then focus on testing multiple highly prospective targets identified by our extensive field programs that have been ongoing since 2021.

“Meanwhile, we continue to make excellent progress on our environmental impact assessment (‘Manifesto de Impacto Ambiental’ or ‘MIA’) which we plan to submit to the Mexican Federal Environmental Department (SEMARNAT) later this quarter. The MIA is one of the principal permits required for the development of Cordero. We have completed an initial review of the new mining law in Mexico and while we are awaiting further clarification on certain amendments, we do not expect the new mining law will have a material impact on the Project timeline. It is our intention to adhere to all Mexican regulatory requirements alongside our overarching corporate objective of delivering the highest industry standards for environmental protection, social responsibility and health and safety.”


This current set of Feasibility Study drilling consists of 23 drill holes and was focused on two key areas: 1) reserve upgrade and expansion drilling in the South Corridor and 2) reserve expansion drilling on the margins of the Pozo de Plata zone in the North Corridor. Supporting maps and sections, drill hole locations and full assay results can be found here: Plan map, sections & assays. A PDF of this release with supporting maps and sections included as appendices can be found here: Press release with plan map & section.

Drilling in the South Corridor continues to demonstrate the potential to improve grade and convert waste to ore within the reserves pit. C22-705 returned 36.7 m of 139 g/t AgEq1 from 236.3 m toward the bottom of the reserves pit in an area previously modelled as low grade and waste. This hole also intercepted 103.6 m of 86 g/t AgEq1 from 91.2 m improving the confidence of a broad higher-grade zone near surface. On this same section, hole C22-688 returned 40.6 m of 197 g/t AgEq1 from 386.4 m and 37.5 m of 78 g/t AgEq from 282.1 m. Both intercepts have the potential to expand the volume of higher-grade blocks modelled toward the bottom of the reserves pit. C22-698 intercepted 78.3 m of 97 g/t AgEq1 from 103.5 m, potentially extending the depth of higher-grade blocks within the reserves pit.

Drilling in the North Corridor consisted of shallow holes targeting the expansion of reserves on the northwest margins of the Pozo de Plata zone. Drilling confirmed that the tenor of mineralization at Pozo de Plata diminishes to the northwest, consistent with the underlying block model estimation in this area.

Detailed drill highlights from this set of Feasibility Study drill holes are provided in the table below:

Hole IDFrom
Width (m)Ag
AgEq1   (g/t)

1All results in this news release are rounded. Assays are uncut and undiluted. Widths are drilled widths, not true widths, as a full interpretation of the actual orientation of mineralization is not complete. As a guideline, intervals with disseminated mineralization were chosen based on a 25 g/t AgEq cutoff with no more than 10 m of dilution. AgEq calculations are used as the basis for reporting metal content calculations given Ag is the dominant metal constituent as a percentage of AgEq value in approximately 70% of the Company’s mineralized intercepts. AgEq is calculated as Ag(g/t) + 18.39 x Au(g/t) + 30.81 x Pb(%) + 36.54(%). This calculation is based on metal prices of USD $22.00/oz Ag, $1,600/oz Au, $1.00/lb Pb, $1.20/lb Zn and life-of-mine average recovery assumptions from the 2023 Pre-Feasibility Study of 87% for Ag, 22% for Au, 86% for Pb and 85% for Zn.


The Company has now completed 49,700 m (156 holes) as part of its Feasibility Study drill program (since the data cut-off for the PFS study). Feasibility study drilling consists of resource upgrade drilling, drilling targeting the expansion of the PFS open pit, engineering drilling and condemnation drilling.

Condemnation drilling is expected to wrap up in June upon which the property-wide drill program will commence. This program will initially target large chargeability anomalies in the Sanson area (approximately 3.5 km to the northeast of Cordero) and resource expansion targets to the northeast of the deposit. Currently, 9,000m of drilling is planned for property wide drilling in 2023.  This program may be expanded depending on the results of the initial drilling.

About Discovery

Discovery’s flagship project is its 100%-owned Cordero project, one of the world’s largest silver deposits. The PFS published in February 2023 demonstrates that Cordero has the potential to be developed into a highly capital-efficient mine that offers the combination of margin, size, and scalability. Cordero is located close to infrastructure in a prolific mining belt in Chihuahua State, Mexico.

On Behalf of the Board of Directors,
Tony Makuch, P.Eng
CEO & Director

For further information contact:

Forbes Gemmell, CFA
VP Corporate Development
Phone: 416-613-9410

Sample analysis and QA/QC Program
Assays are uncut except where indicated. All core assays are from HQ drill core unless stated otherwise. Drill core is logged and sampled in a secure core storage facility located at the project site 40km north of the city of Parral. Core samples from the program are cut in half, using a diamond cutting saw, and are sent to ALS Geochemistry-Mexico for preparation in Chihuahua City, Mexico, and subsequently pulps are sent to ALS Vancouver, Canada, which is an accredited mineral analysis laboratory, for analysis. All samples are prepared using a method whereby the entire sample is crushed to 70% passing -2mm, a split of 250g is taken and pulverized to better than 85% passing 75 microns. Samples are analyzed for gold using standard Fire Assay-AAS techniques (Au-AA24) from a 50g pulp. Over limits are analyzed by fire assay and gravimetric finish. Samples are also analyzed using 33 element inductively coupled plasma method (“ME-ICP61”). Over limit sample values are re-assayed for: (1) values of zinc > 1%; (2) values of lead > 1%; and (3) values of silver > 100 g/t. Samples are re-assayed using the ME-OG62 (high-grade material ICP-AES) analytical package. For values of silver greater than 1,500 g/t, samples are re-assayed using the Ag-CON01 analytical method, a standard 30 g fire assay with gravimetric finish. Certified standards and blanks are routinely inserted into all sample shipments to ensure integrity of the assay process. Selected samples are chosen for duplicate assay from the coarse reject and pulps of the original sample. No QAQC issues were noted with the results reported herein.

Qualified Person

Gernot Wober, P.Geo, VP Exploration, Discovery Silver Corp., is the Company's designated Qualified Person for this news release within the meaning of National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) and has reviewed and validated that the information contained in this news release is accurate.

The most recent technical report for the Cordero Project is the 2023 Preliminary Feasibility Study for the Company’s Cordero project. The report was completed by Ausenco with support from AGP Mining Consultants Inc., Knight Piésold Ltd. and Hard Rock Consulting and is available on Discovery’s website and on SEDAR under Discovery Silver Corp.


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This news release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of any of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful, including any of the securities in the United States of America. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the “1933 Act”) or any state securities laws and may not be offered or sold within the United States or to, or for account or benefit of, U.S. Persons (as defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicable state securities laws, or an exemption from such registration requirements is available.

Cautionary Note Regarding Forward-Looking Statements

This news release may include forward-looking statements that are subject to inherent risks and uncertainties. All statements within this news release, other than statements of historical fact, are to be considered forward looking. Although Discovery believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those described in forward-looking statements. Statements regarding the results of the pre-feasibility study and the anticipated capital and operating costs, sustaining costs, net present value, internal rate of return, payback period, process capacity, average annual metal production, average process recoveries, concession renewal, permitting of the Project, anticipated mining and processing methods, proposed pre-feasibility study production schedule and metal production profile, anticipated construction period, anticipated mine life, expected recoveries and grades, anticipated production rates, infrastructure, social and environmental impact studies, availability of labour, tax rates and commodity prices that would support development of the Project. Information concerning mineral resource/reserve estimates and the economic analysis thereof contained in the results of the pre-feasibility study are also forward-looking statements in that they reflect a prediction of the mineralization that would be encountered, and the results of mining, if a mineral deposit were developed and mined. Forward-looking statements are statements that are not historical facts which address events, results, outcomes or developments that the Company expects to occur. Forward-looking statements are based on the beliefs, estimates and opinions of the Company’s management on the date the statements are made and they involve a number of risks and uncertainties. Factors that could cause actual results to differ materially from those described in forward-looking statements include fluctuations in market prices, including metal prices, continued availability of capital and financing, and general economic, market or business conditions. There can be no assurances that such statements will prove accurate and, therefore, readers are advised to rely on their own evaluation of such uncertainties. Discovery does not assume any obligation to update any forward-looking statements except as required under applicable laws. The risks and uncertainties that may affect forward-looking statements, or the material factors or assumptions used to develop such forward-looking information, are described under the heading "Risks Factors" in the Company’s Annual Information Form dated March 29, 2023, which is available under the Company’s issuer profile on SEDAR at