Pavon Gold Mine

The Pavon property is located within the Natividad and Las Brisas exploration concessions totaling 31.5km2 located approximately 300 kms on paved highways from the Libertad processing facility.

Since acquiring the asset in 2019 Calibre completed an initial open pit resource estimate, initiated and completed the Environmental Impact Assessment (“EIA”) for Pavon Norte, completed mine design, construction and begun open pit mining and transporting to the Libertad processing plant.

By implementing our ‘Hub-and-Spoke’ operating model and by developing the Pavon gold project, the Libertad Complex processing life has been significantly extended and is now expected to generate robust cash flows over several years.

The Pavon satellite deposit (“Spoke”) feeding into the Libertad Complex represents a portion of the mill feed from 2021 through 2024. The Pavon PFS demonstrates the value of the Company’s operating approach by utilizing the surplus capacity at the Libertad mill, investing in exploration to expand the current mineral resource base at Pavon as well as the opportunity for additional low-cost growth. Over 50% excess mill capacity exists at the Libertad mill underpinning Calibre’s focus on exploration to expand resources and discover new satellite deposits which could provide future mill feed.

Pavon represents an average of 0.32 million tonnes per annum of mill feed over the next four years, additional mill feed sources include those at Limon and Libertad as per the 2020 Preliminary Economics Assessment (“PEA”) (see August 11, 2020 news release for further details) leaving an average of 1.5 million tonnes of surplus annual mill capacity over the next four years as a significant opportunity for organic growth via further conversion of Mineral Resources, exploration success, artisanal ore purchases or toll milling.

2021 PAVON PRE-FEASIBILITY STUDY RESULTS (now in production)

PAVON OPEN PIT GOLD MINE: PFS HIGHLIGHTS

  • Reserve Gold Price
$1,400 per ounce
  • Initial Mine Life
4 years
  • Average Life-of-Mine (“LOM”) Throughput
877 tonnes per day
  • Average LOM Grade
4.86 g/t gold, 7.0 g/t silver
  • Average LOM Recovery
94% gold, 35% silver
  • Average Annual Gold Production
47,000 ounces
  • Average LOM Total Cash Costs1
$650 per ounce
  • Average LOM All-In Sustaining Costs1 (“AISC”)
$711 per ounce (net of Ag credits)
  • Total Gold Production
188,213 ounces
  • After-tax NPV5% ($1,700/oz gold)
$106.4 million

OPPORTUNITIES

  • Reserves consider no new drill data after December 2015;
  • Step out drilling underway to expand gold resources along strike and down dip;
  • Additional resources outside of the reserve mine plan offer potential to extend mine life;
  • Significant surplus capacity at the Libertad mill;
  • Underpins potential for low-cost organic production growth.

TABLE 1 – PAVON RESERVE ESTIMATE (DECEMBER 31, 2020)2

Classification Deposit Tonnes
(‘000 t)
Grade
(Au g/t)
Grade
(Ag g/t)
Au Ounces
(‘000 oz)
Ag Ounces
(‘000 oz)
Probable Pavon Norte 759 3.42 4.33 83 106
Probable Pavon Central 522 6.96 10.95 117 184
Probable Total Pavon 1,281 4.86 7.02 200 290

TABLE 2 – PAVON RESOURCE ESTIMATE* (DECEMBER 31, 2020)3

Classification Deposit Tonnes
(000 t)
Grade
(Au g/t)
Grade
(Ag g/t)
Au Ounces
(‘000 oz)
Ag Ounces
(‘000 oz)
Indicated Pavon Norte 863 3.58 4.77 99 132
Indicated Pavon Central 529 7.73 12.55 131 213
Indicated Total 1,392 5.16 7.72 231 346
 *Indicated Mineral Resources are inclusive of Mineral Reserves.        
Classification Deposit Tonnes
(000 t)
Grade
(Au g/t)
Grade
(Ag g/t)
Au Ounces
(‘000 oz)
Ag Ounces
(‘000 oz)
Inferred Pavon Norte  98 3.53 6.16 11 19
Inferred Pavon Central 153 4.46 7.68 22 38
Inferred Pavon South 326 2.85 3.22 30 34
Inferred Total 577 3.39 4.90 63 91

TABLE 3 – PAVON: PFS FINANCIAL SENSITIVITY MODEL ($ MILLION, AFTER-TAX)

Gold Price Assumption ($/oz) 1,400 1,500
Base Case
1,700 1,900
Cumulative after-tax free cash flow ($’000) 80,220 92,824 118,032 143,240
After-tax NPV5% ($’000) 71,760 83,294 106,364 129,433
After-tax NPV10% ($,000) 64,585 75,211 96,463 117,715

The financial models in the PFS were prepared by SLR Consulting (Canada) Ltd. (formerly Roscoe Postle Associates Inc.).  The PFS includes metal price sensitivities detailed in the technical report, which is expected to be published on www.sedar.com in March 2021.

TABLE 4 – PAVON: PFS PRODUCTION AND COST OUTLOOK

    2021 2022 2023 2024 Total
Tonnes Mined (000t) 281 299 424 276 1,281
Waste Mined (000t) 2,235 3,266 4,898 3,556 13,954
Strip ratio (W:O) 7.95 10.91 11.54 12.87 10.89
Tonnes Milled (000t) 281 279 410 311 1,281
Grade Milled (g/t Au) 3.54 3.48 5.85 5.99 4.86
Gold Production (oz) 30,075 29,339 72,615 56,183 188,213
Total Cash Costs1 ($/oz) 849 939 540 536 650
AISC1 ($/oz) 943 939 622 536 711
Non-Sustaining Capital ($m)* 9.45 2.54        - - 11.99

   *Includes 14% contingency.

District Opportunities

By implementing our ‘Hub-and-Spoke’ operating model and by developing the Pavon gold project, the Libertad Complex processing life has been significantly extended and is now expected to generate robust cash flows over several years.

The Pavon satellite deposit (“Spoke”) feeding into the Libertad Complex represents a portion of the mill feed from 2021 through 2024. The Pavon PFS demonstrates the value of the Company’s operating approach by utilizing the surplus capacity at the Libertad mill, investing in exploration to expand the current mineral resource base at Pavon as well as the opportunity for additional low-cost growth. Over 50% excess mill capacity exists at the Libertad mill underpinning Calibre’s focus on exploration to expand resources and discover new satellite deposits which could provide future mill feed.

Pavon represents an average of 0.32 million tonnes per annum of mill feed over the next four years, additional mill feed sources include those at Limon and Libertad as per the 2020 Preliminary Economics Assessment (“PEA”) (see August 11, 2020 news release for further details) leaving an average of 1.5 million tonnes of surplus annual mill capacity over the next four years as a significant opportunity for organic growth via further conversion of Mineral Resources, exploration success, artisanal ore purchases or toll milling.

The Pavon project represents a newly emerging gold district in Nicaragua in a region that has remained largely underexplored by modern methods. Historical exploration focused on delineating resources within the near surface portions of the Pavon Norte, Central and South deposits where indicated resources totaling 231,000 ounces of gold averaging 5.16 g/t have been delineated within the upper 100 meters.

Pavon Norte and Central in combination with the Pavon South vein system also host additional inferred resources totaling 63,000 ounces of gold averaging 3.39 g/t. Exploration drilling initiated by Calibre in Q4 2020 has returned positive results from several step-out holes drilled along and beyond the margins of the currently defined open pit reserves, demonstrating that significant potential exists to expand mineral resources along strike and down dip at both deposits (see February 23, 2021 news release and figures). Two diamond drill rigs are currently testing the potential for lateral and vertical extensions and to the Pavon Norte and Central vein systems. The Company’s exploration team is also actively conducting field surveys to identify areas with potential for new gold discoveries within the project area. Calibre looks forward to providing further updates as exploration at Pavon continues to advance.

RECENT NEWS RELATED TO PAVON MINE

https://calibremining.com/news/calibre-announces-positive-pavon-gold-mine-pre-fea-2474/
https://calibremining.com/news/pavon-norte-open-pit-mine-delivers-initial-mill-fe-2123/
https://calibremining.com/news/calibre-releases-multi-year-production-and-cost-ou-1750/
https://calibremining.com/news/calibre-mining-receives-environmental-permit-for-d-1703/
https://calibremining.com/news/calibre-mining-files-ni-43-101-technical-report-fo-1283/
https://calibremining.com/news/calibre-mining-announces-a-318-increase-in-the-pa-1279/

NOTE 1:  Non-IFRS Measures
Calibre has included certain non-IFRS measures in this news release, as discussed below.  The Company believes that these measures, in addition to conventional measures prepared in accordance with IFRS, provides investors with an improved ability to evaluate the underlying performance of the Company.  These non-IFRS measures are intended to provide additional information and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS.  These measures do not have any standardized meaning prescribed under IFRS, and therefore may not be comparable to other issuers.

Total Cash Costs per Ounce of Gold Sold (“Total Cash Costs”)
Total Cash Costs include mine site operating costs such as mining, processing, and local administrative costs (including stock-based compensation related to mine operations), royalties, production taxes, mine standby costs and current inventory write-downs, if any.  Production costs are exclusive of depreciation and depletion, reclamation, capital, and exploration costs.  Total Cash Costs are net of by-product silver sales and are divided by gold ounces sold to arrive at a per ounce figure.

All-In Sustaining Costs per Ounce of Gold Sold (“AISC”)
AISC is a performance measure that reflects the expenditures that are required to produce an ounce of gold from current operations.  While there is no standardized meaning of the measure across the industry, the Company’s definition is derived from the definition, as set out by the World Gold Council in its guidance dated June 27, 2013 and November 16, 2018, respectively.  The World Gold Council is a non-regulatory, non-profit organization established in 1987 whose members include global senior mining companies.  The Company believes that this measure is useful to external users in assessing operating performance and the ability to generate free cash flow from operations.

Calibre defines AISC as the sum of Total Cash Costs (per above), sustaining capital (capital required to maintain current operations at existing production levels), capital lease repayments, corporate general and administrative expenses, exploration expenditures designed to increase resource confidence at producing mines, amortization of asset retirement costs and rehabilitation accretion related to current operations.  AISC excludes capital expenditures for significant improvements at existing operations deemed to be expansionary in nature, exploration and evaluation related to resource growth, rehabilitation accretion not related to current operations, financing costs, debt repayments, and taxes.  Total AISC is divided by gold ounces sold to arrive at a per ounce figure.

Pavon Reserves

  1. The mineral reserve estimates were prepared by Shane Ghouralal, P.Eng. MBA (Qualified Person for these mineral reserve estimates), reported using the 2014 CIM Definition Standards, and have an effective date of December 31, 2020. 
  2. Mineral reserves are mined tonnes and diluted grade; the reference point is the mill feed at the primary crusher. 
  3. Mineral reserves are reported at a cut-off grade of 1.26 g/t Au.  
  4. Cut-off grade assumes Au of US$1,400/oz; 100% payable gold with a royalty of US$28/oz; selling cost are US$4.38/oz including offsite costs (refining and transport); and uses an 94% metallurgical recovery for Au and 35% for Ag. The cut off-grade covers processing costs of US$22.62/t, hauling costs of US$31.91/t, administrative (G&A) costs of US$4.91/t, tailings facility costs of US$2.56/t.  

Pavon Resources

  1. Mineral Resources were prepared in accordance CIM (2014) definitions. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
  2. Mineral Resources are inclusive of Mineral Reserves.
  3. This estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
  4. Open Pit Mineral Resources are reported at cut-off grades of 1.17 g/t Au. Mineral Resources are estimated using a long-term gold price of US$1,500 per ounce.
  5. Appropriate mining costs, processing costs, metal recoveries, and inter-ramp pit slope angles were used to generate the pit shell.
  6. Rounding may result in apparent summation differences between tonnes, grade, and contained metal content. Tonnage and grade measurements are in metric units. Contained gold ounces are in troy ounces.
  7. Composites completed at 2 m down the hole.
  8. Contributing assay composites were capped at 29.03 g/t Au at Pavon Norte, 75 g/t Au at Pavón Central, and 17.18 g/t Au at Pavon South.
  9. A specific gravity value of 2.49 was applied to all blocks in rock and 2.30 was applied to all blocks in saprolite.

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