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Calibre Mining Corp (2)
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Calibre Mining drills 50.3 m of 1.02 g/t Au at Pan mine

2022-03-08 09:18 ET - News Release

Mr. Darren Hall reports


Calibre Mining Corp. has released assay results from the continuing resource conversion and expansion drill program at the newly acquired, 100-per-cent-owned Pan mine, located in White Pine County, Nevada. Numerous results outlined below indicate the potential for resource expansion while focusing on converting known zones of mineralization. These reported results are the initial batch from the Q4 2021 drill program. During 2022, Calibre is advancing an additional multirig 50,000-metre program which is currently under way with five drill rigs operating in Nevada.

Highlights from the Pan drill program include:

  • Drilling has focused on new zones of mineralization and expanding known zones of inferred mineralization;
  • 1.02 grams per tonne gold over 50.3 metres in hole PR21-045, 0.83 g/t Au over 34.0 metres in hole PCM21-001;
  • 0.47 g/t Au over 45.7 metres in hole PR21-044, 0.44 g/t Au over 44.2 metres in hole PR21-002;
  • 0.46 g/t Au over 56.4 metres and 0.40 g/t Au over 62.5 metres in hole PR21-001;
  • 0.58 g/t Au over 41.2 metres and 0.68 g/t Au over 24.4 metres in hole PR21-022;
  • 0.40 g/t Au over 30.5 metres and 0.42 g/t Au over 16.8 metres in hole PR21-021;
  • 0.65 g/t Au over 9.1 metres in hole PR21-017, 0.59 g/t Au over 13.7 metres in hole PR21-048;
  • 0.48 g/t Au over 45.7 metres in hole PR21-044, 0.55 g/t Au over 16.8 metres in hole PR21-056.


All holes were drilled at angles of negative 45 to negative 90 degrees at azimuths designed to intersect targeted structures as nearly as possible to perpendicular when possible. Some drill holes and intercepts reported here did not cross mineralization perpendicularly, and do not represent exact true widths.

Darren Hall, president and chief executive officer of Calibre, stated: "These initial results indicate that several targets previously identified by the Nevada exploration team have the potential to add to the overall Pan resource and extend the mine life. Calibre's 2022 drill program will continue to advance near-mine resource conversion and expansion opportunities and test new targets that have not been drilled within the Pan exploration concession.

"The team in Nevada have done a commendable job in establishing Pan as a reliable producer, generating operating cash flow which was prudently reinvested into the business. While it is early, we are seeing the benefits of our mutirig, 50,000-metre exploration and resource expansion drill program, which will give us valuable new information to optimize the Pan mine production profile. Given Calibre's strong balance sheet and consolidated production guidance of 220,000 - 235,000 ounces gold, the company will generate significant operating cash flow, providing the capital to reinvest and unlock the ultimate potential at Pan."

Tom Gallo, senior vice-president of growth at Calibre, stated: "Initial drilling at Pan is focused on high-priority growth targets adjacent to known resources. We are encouraged by the early results at Pegasus and other areas proximal to previously reported mineral resources and believe expansion of these areas is favourable. We are excited to continue to drill resource expansion opportunities and accelerate our program to test new targets on the 43-square-kilometre Pan property."

Pan mine targets

Initial drilling has focused near mine along strike of the Branham fault zone. Drilling within the Pegasus target, located on the northeast edge of the operating South Pan open pit, was carried out to expand and convert resources previously classified as inferred. Three holes, PR21-001 (0.46 g/t Au over 56.4 metres and 0.40 g/t Au over 62.5 metres), PR21-002 (0.44 g/t Au over 44.2 metres) and PR21-045 (1.02 g/t Au over 50.3 metres) show mineralization continuing north-easterly anticipated to expand resources. Stratigraphically controlled zones such as Pegasus are being targeted peripheral to the Branham fault zone which has, historically, been the primary control for ore grade mineralization at Pan. Pegasus represents thick gold intercepts continuing along the favourable host rock horizon remaining open to the northeast. Also, within Pegasus, holes PR21-021 (0.40 g/t Au over 30.5 metres and 0.42 g/t Au over 16.8 metres) and PR21-022 (0.58 g/t Au over 41.2 metres and 0.68 g/t Au over 24.4 metres) show thick gold intervals extending down dip. Many of the holes described within this news release suggest expansion or enhancement potential of the modeled resource (see updated technical report, dated Sept. 8, 2021). The continuity of Pegasus could lead to significant additions to resources in this area.

Additional highlights from the drill program include:

  • Hole PR21-017: 0.65 g/t Au over 9.14 metres indicates shallow mineralization may extend southward and eastward and expands and upgrades the mineralization encountered in historic drilling (see updated technical report, dated Sept. 8, 2021) and expands a block of inferred mineralization;
  • Hole PR21-056: 0.55 g/t Au over 16.8 metres including 1.17 g/t Au over 3.1 metres represents thicker and higher-grade mineralization to the west of the BFZ which, as described above, has been the primary mineral controlling structure at Pan;
  • Hole PR21-048: 0.36 g/t over 15.2 metres and 0.60 g/t over 13.7 metres demonstrate a zone of increased thickness relative to the recent resource model in this target zone;
  • Hole PR21-045: 1.02 g/t over 50.29 metres represents the addition of resource as it falls within the Pegasus target;
  • Holes PR21-027 and PR21-025 from the Black Stallion area confirm shallow oxide mineralization with the potential to expand this "satellite" open pit. The two holes contain 1.08 g/t (PR21-027) over 4.56 metres and 0.41 g/t (PR21-025) over 9.1 metres with all intercepts falling within 30 m of the surface.

Pan gold mine overview and opportunities

The Pan mine is a carlin-style, open-pit, heap leach mine located in east-central Nevada, approximately 28 km southeast of the town of Eureka, on the prolific Battle Mountain-Eureka gold trend. Pan ramped up smoothly after restarting operations in September, 2017, and has a record of reserve and resource replacement. Gold production has increased year over year since 2017 with 2021 gold production reaching 45,397 ounces. During 2022, Calibre is advancing a multirig, 50,000-metre resource expansion and conversion drilling program at Pan.

Quality assurance/quality control

Calibre Mining maintains a quality assurance/quality control program for all its exploration projects using industry best practices. Key elements of the QA/QC program include the insertion of assay standards, blanks and duplicates in the sample stream to ensure the assay lab results are within specified performance levels. Downhole deviation surveys are provided by International Directional Services, utilizing a surface recording gyroscope, and by trained drill crews operating a north-seeking gyroscope supplied by REFLEX. RC drilling was performed by Boart Longyear of Salt Lake City, Utah, and Alford Drilling from Elko, Nev. Assays were performed by ALS Reno, where fire assays were determined on a 30-gram charge with an AAS finish. An additional cyanide leach assay was also completed. ALS carries ISO/IEC 17025:2017 certification.

Qualified person

The scientific and technical information contained in this news release was approved by Paul Noland (AIPG CPG-11293), Calibre Mining's vice-president of exploration, Nevada, and a qualified person under National Instrument 43-101.

About Calibre Mining Corp.

Calibre Mining is a Canadian-listed, Americas-focused, growing mid-tier gold producer with a strong pipeline of development and exploration opportunities across Nevada and Washington in the United States, and Nicaragua. Calibre is focused on delivering sustainable value for shareholders, local communities and all stakeholders through responsible operations and a disciplined approach to growth. With a strong balance sheet, no debt, a proven management team, strong operating cash flow, accretive development projects and district-scale exploration opportunities Calibre will unlock significant value.

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