| Key Facts | |
|---|---|
| Location | Southwestern Idaho, USA |
| Ownership | 100% |
| Metal | Gold & Silver |
| Status | Development (Pre-feasibility Study) |
| Mine Type | Open Pit |
| Processing | Heap Leach |
| Acquisition | November 2017 |
The DeLamar Project (the “Project”) is a gold and silver mining development project located in Owyhee County in southwest Idaho. The Project is comprised of the historic DeLamar and adjacent Florida Mountain deposits, which were previously operated by Kinross Gold Corporation. Since acquiring the Project in 2017, the Company has demonstrated significant resource growth and conversion and published robust economic studies in the maiden 2019 Preliminary Economic Assessment and the 2022 Preliminary Feasibility Study. In 2023, Integra published a technical report for the updated Mineral Resource Estimate which incorporated mineralized stockpile and backfill material at surface that was mined by previous operators. The Project is currently being advanced through permitting with the U.S. Bureau of Land Management (“BLM”).
Mineral Reserves & Resources
Notes to Mineral Reserves
- All estimates of mineral reserves have been prepared in accordance with NI 43-101 and are included within the current measured and indicated mineral resources.
- Thomas L. Dyer, P.E. for RESPEC, in Reno, Nevada, is a qualified person as defined in NI 43-101, and is responsible for reporting proven and probable mineral reserves for the DeLamar Project. Mr. Dyer is independent of Integra.
- Mineral reserves are based on prices of $1,650 per ounce Au and $21.00 per ounce Ag. The reserves were defined based on pit designs that were created to follow optimized pit shells created in Whittle. Pit designs followed pit slope recommendations provided by RESPEC.
- Reserves are reported using block value cutoff grades representing the cost of processing:
- Florida Mountain oxide leach cutoff grade value of $3.55/t.
- Florida Mountain mixed leach cutoff grade value of $4.20/t.
- Florida Mountain non-oxide mill cutoff grade value of $10.35/t.
- DeLamar oxide leach cutoff grade value of $3.65/t
- DeLamar mixed leach cutoff grade value of $4.65/t.
- DeLamar non-oxide mill cutoff grade value of $15.00/t.
- The mineral reserves point of reference is the point where is material is fed into the crusher.
- The effective date of the mineral reserves estimate is January 24, 2022.
- All ounces reported herein represent troy ounces, “g/t Au” represents grams per gold tonne and “g/t Ag” represents grams per silver tonne.
- Columns may not sum due to rounding.
- The estimate of mineral reserves may be materially affected by geology, environment, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
- Energy prices of US$2.50 per gallon of diesel and $0.065 per kWh were used.
- See NI 43-101 technical report titled: “Technical Report for the DeLamar and Florida Mountain Gold-Silver project, Owyhee County, Idaho, USA”, dated October 31, 2023 with an effective date of August 25, 2023 (the “DeLamar Technical Report”), available under Integra’s SEDAR+ profile at www.sedarplus.ca and EDGAR profile at https://www.sec.gov.
Notes to Mineral Resources
- Mineral resources that are not mineral reserves do not have demonstrated economic viability.
- Michael M. Gustin, C.P.G. and Principal Consultant for RESPEC, is a qualified person as defined in NI 43-101, and is responsible for reporting mineral resources for the DeLamar Project. Mr. Gustin is independent of Integra.
- In-situ oxide and mixed and all stockpile mineral resources are reported at a 0.17 and 0.1 g/t AuEq cut-off, respectively, in consideration of potential open-pit mining and heap-leach processing.
- Non-oxide mineral resources are reported at a 0.3 g/t AuEq cut-off at DeLamar and 0.2 g/t AuEq at Florida Mountain in consideration of potential open pit mining and grinding, flotation, ultra-fine regrind of concentrates, and either Albion or agitated cyanide-leaching of the reground concentrates.
- The mineral resources are constrained by pit optimizations.
- Gold equivalent grades were calculated using the metal prices and recoveries presented in Table 14.18 and Table 14.19 from the DeLamar Technical Report.
- Rounding as required by reporting guidelines may result in apparent discrepancies between tonnes, grades, and contained metal content.
- The effective date of the mineral resources is August 25, 2023.
- The estimate of mineral resources may be materially affected by geology, environment, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
- See NI 43-101 technical report titled: “Technical Report for the DeLamar and Florida Mountain Gold-Silver project, Owyhee County, Idaho, USA”, dated October 31, 2023 with an effective date of August 25, 2023, available under Integra’s SEDAR+ profile at www.sedarplus.ca and EDGAR profile at https://www.sec.gov.