This report presents the January 2022 NI 43-101 technical update for the Santander Mine, covering the Magistral and Pipe deposits in Huaral, Peru.
Report context
This Technical Report, prepared in accordance with National Instrument 43-101 standards, was prepared for CDPR Inc. and provides an update for the Santander Mine Magistral and Pipe deposits. The report is dated January 2022 and is based on information available at the time of preparation, data supplied by outside sources, and the assumptions, conditions, and qualifications set forth in the document.
Processing route
Plant Flowsheet and Process Description
The processing facility at Santander Mine includes crushing, grinding, flotation, and dewatering stages as part of the recovery methods outlined in Section 17 of the technical report.
Crushing
The crushing circuit is described as the first stage of the processing plant flowsheet at the Santander Mine.
Grinding
Following crushing, the grinding circuit processes the material prior to flotation and dewatering.
Flotation and Dewatering
The flotation and dewatering stages are described as part of the overall recovery methods for the processing plant, following the crushing and grinding circuits.
Plant Performance
Section 17.5 of the report addresses plant performance for the Santander Mine processing facility.
Key reported parameters
The following parameters are drawn from the mineral processing and metallurgical testing sections of the report, and represent testwork results, historical data, and proposed design elements as documented in the original report.
| Parameter | Unit | Value | Basis |
|---|---|---|---|
| Abrasion Index | , | Reported | Testwork by SGS Minerals Services Perú |
| Work Index | kWh/t | Reported | Testwork by SGS Minerals Services Perú |
| Grinding Time | Minutes | Reported | Testwork by SGS Minerals Services Perú |
| Flotation Recovery (Magistral Mineral 2021) | % | Reported | Historical operating data, Section 17.6 |
| Analytical Characterisation | , | Performed | Testwork by SGS Minerals Services Perú |
| Mineralogical Characterisation | , | Performed | Testwork by SGS Minerals Services Perú |
Project website: https://www.pascoresources.com/news-and-media/releases/cerro-de-pasco-resources-announces-sale-of-its-santander-mine
Technical qualifications
This report contains estimates, projections, and conclusions that are forward-looking information within the meaning of applicable laws. Forward-looking statements are based upon the responsible Qualified Person’s opinion at the time they are made but involve significant risks and uncertainty. There can be no assurance that forward-looking information in this report will prove to be accurate, as actual results and future events could differ materially from those anticipated. The report is based on information available at the time of preparation and data supplied by outside sources. The quality of information, conclusions, and estimates contained herein is consistent with the level of effort involved in DRA Global Limited’s services. Except for purposes legislated under Canadian securities laws, any other uses of this report by any third party are at that party’s sole risk.
Source: Technical Report, Cerro de Pasco Resources – NI 43-101 and Resource Estimate Update for Santander Mine Magistral and Pipe Deposits, Huaral, Department of Lima, Peru, January 2022, Sections 13 (Mineral Processing and Metallurgical Testing), 17 (Recovery Methods), and Important Notice.
