
1. Mineral Resources are not Mineral Reserves do not have demonstrated economic viability. The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues. There is no certainty that Mineral Resources will be converted to Mineral Reserves.
2. The Inferred Mineral Resource in this estimate has a lower level of confidence than that applied to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that the majority of the Inferred Mineral Resource could be upgraded to an Indicated Mineral Resource with continued exploration.
3. The Mineral Resources in this news release were estimated in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (CIM), CIM Standards on Mineral Resources and Reserves, Definitions (2014) and Best Practices Guidelines (2019) prepared by the CIM Standing Committee on Reserve Definitions and adopted by the CIM Council.
4. Metal prices used were US$1,625/oz Au, US$19/oz Ag, US$2.80/lb Cu with process recoveries of 88% Au, 30% Ag and 80% Cu. A C$16.50/tonne process and C$2 G&A cost were used.
5. The constraining pit optimization parameters were C$2.50/t mineralized and waste material mining cost and 50-degree pit slopes with a 0.30 gpt AuEq cut-off.
6. The out-of-pit parameters were at a C$10/t large scale bulk mining cost. The out-of-pit Mineral Resource grade blocks were quantified above the 0.46 gpt AuEq cut-off, below the constraining pit shell and within the constraining mineralized wireframes. Out–of-Pit Mineral Resources exhibit continuity and reasonable potential for extraction by a bulk underground mining method.
QA/QC
Drill core samples were prepared at MSA Labs’ Preparation Laboratory in Terrace, BC and assayed at MSA Labs’ Geochemical Laboratory in Langley, BC. Analytical accuracy and precision are monitored by the submission of blanks, certified reference materials and duplicate samples inserted at regular intervals into the sample stream by Tudor Gold personnel. MSA Laboratories quality system complies with the requirements for the International Standards ISO 17025 and ISO 9001. MSA Labs is independent of the Company.
Qualified Person
Eugene Puritch, P.Eng., FEC, CET president of P&E Mining Consultants Inc. is the Qualified Person, as defined in National Instrument 43-101 Standards of Disclosure for Mineral Projects, who has reviewed and approved the scientific and technical disclosure in this news release. Mr. Puritch is independent of the Company.