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Canada
Silvertip Mine

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 Location:
164 km N from Dease Lake, British Columbia, Canada

  Address:
104 S. Michigan Avenue, Suite 900
Chicago
Illinois, United States
60603
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  • Overview
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  • Geology
  • Mining
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  • Production
  • Reserves
  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeUnderground
Commodities
  • Silver
  • Zinc
  • Lead
Mining Method
  • Cut & Fill
  • Longhole stoping
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill
Production Start...
Mine Life5 years (as of Jan 1, 2021)
The Silvertip development project is one of the highest-grade silver-zinc-lead operations in the world.

Coeur continues to advance study work to assess the economics of a potential future expansion and restart of its high-grade Silvertip silver- zinc-lead development project in British Columbia, Canada. The Company’s objective remains to complete an evaluation by year-end of higher throughput scenarios to reduce unit costs and to take advantage of Silvertip’s expanding, highgrade resource base.


Owners

Source: p. 23
CompanyInterestOwnership
Coeur Mining, Inc. 100 % Indirect
Coeur Silvertip Holdings Ltd. (operator) 100 % Direct
The Silvertip Property is owned and operated by Coeur Silvertip Holdings Ltd. a wholly-owned subsidiary of Coeur Mining, Inc.

Contractors

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Deposit Type

  • Carbonate replacement
  • SEDEX


Summary:

The Silvertip mineralization is a silver-zinc-lead Carbonate Replacement Deposit (CRD) with metals content, polyphase mineralization, abundant replacement textures, pyrite pseudomorphing pyrrhotite, and wallrock alteration reminiscent of many of the manto-chimney CRD’s of Mexico and the western US

These economically attractive, polymetallic systems can stretch continuously from copper-gold enriched skarns near intrusion contacts in the “proximal” part of the system, to massive sulfide manto and chimney deposits with no exposed igneous relationship in the “distal” areas. Traditionally these deposits have been considered difficult exploration targets due to a paucity of peripheral indicators to mineralization such as hydrothermal alteration or consistent relationships to breccias or structures.

The Silvertip mineralization consists of silver-lead-zinc massive sulphide, formed by hydrothermal replacement processes in McDame Group limestone. In Silvertip terminology, it is known as “Lower Zone”. The main mineralized zones are not exposed, lying between about 50 m and several hundred metres beneath the surface, and covered by the Earn Group. These zones are mainly north of Silvertip Mountain and east of Camp Creek. The ‘Silver Creek’ area is in the west and northwest; the ‘Discovery’ area lies farther east and at greater depth; and the ‘Discovery North’ area, lying to the north, has received relatively little attention to date, but is likely continuous with ........


Mining Methods

  • Cut & Fill
  • Longhole stoping
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill


Summary:

There are two portals which allow access to the Silvertip Mine, the historical portal, referred to as Portal 1 (P1), which is used for personnel and material access, and the ventilation intake portal, referred to as Portal 2 (P2) which is also used for emergency egress. The historical ramp was driven with a design profile of 4.27 mW by 4.57 mH and the newer ramp is developed with a design profile of 4.5 mH by 4.5 mW.

The Silvertip mine was designed on the basis of the following key principles:

• Mechanized trackless operation with decline access;
• A production rate building up to 1,000 tpd; and
• A material handling system using truck haulage of ore and waste to surface.

The primary mining method planned at Silvertip for the sub-horizontal manto deposits is cut and fill (CAF). When possible slashing of the walls and backs is utilized to improve ore recovery. This method is ideal for this orebody due to the irregular shape, shallow dip, relatively high grade, and generally poor rock competency. Also, it can limit the exposed span and support the hangingwall.

Longhole stoping is also planned for some of the thicker manto and the vertical chimney mineralization.

CAF is a development-intensive mining method in which parallel drifts are mined in a primary- secondary sequence. After the primary drift is mined, it is backfilled with cemented fill, so that the secondary drift may be mined alongside. The cut and f ........


Crushing and Grinding
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Processing

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Summary:

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Production:
Production results for 2020 year prior to the temporary suspension of mining and processing activities in February 2020.

CommodityUnits202020192018
Silver oz  ......  Subscription required  ......  Subscription required182,254
Zinc lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent koz  ......  Subscription required
All production numbers are expressed as metal in concentrate.
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Operational Metrics:

Metrics20192018
Tonnes milled 236,547 tons49,454 tons

Reserves at December 31, 2021:
Underground Mineral Resource estimates are reported using a net smelter return (“NSR”) cutoff of US$130/tonne.

CategoryTonnage CommodityGradeContained Metal
Proven 186 k tons Silver 12.01 oz/ton 2,233 koz
Proven 186 k tons Zinc 10.1 % 37,647 k lbs
Proven 186 k tons Lead 8.5 % 31,656 k lbs
Probable 1,618 k tons Silver 7.67 oz/ton 12,403 koz
Probable 1,618 k tons Zinc 8 % 258,418 k lbs
Probable 1,618 k tons Lead 5 % 161,569 k lbs
Proven & Probable 1,804 k tons Silver 8.11 oz/ton 14,636 koz
Proven & Probable 1,804 k tons Zinc 8.2 % 296,065 k lbs
Proven & Probable 1,804 k tons Lead 5.4 % 193,225 k lbs
Measured 319 k tons Silver 10.33 oz/ton 3,296 koz
Measured 319 k tons Zinc 9.4 % 9.4 k lbs
Measured 319 k tons Lead 6.6 % 41,939 k lbs
Indicated 2,498 k tons Silver 9.23 oz/ton 23,048 koz
Indicated 2,498 k tons Zinc 10.6 % 529,353 k lbs
Indicated 2,498 k tons Lead 5.4 % 270,643 k lbs
Measured & Indicated 2,817 k tons Silver 9.35 oz/ton 26,344 koz
Measured & Indicated 2,817 k tons Zinc 10.5 % 589,382 k lbs
Measured & Indicated 2,817 k tons Lead 5.6 % 312,582 k lbs
Inferred 2,350 k tons Silver 7.57 oz/ton 17,787 koz
Inferred 2,350 k tons Zinc 9 % 422,335 k lbs
Inferred 2,350 k tons Lead 4.3 % 200,725 k lbs

Commodity Production Costs:

CommodityUnits20192018
Total cash costs (sold) Lead USD  ......  Subscription required 3.23 / lb  
Total cash costs (sold) Zinc USD  ......  Subscription required 3.34 / lb  
Total cash costs (sold) Silver USD  ......  Subscription required 55.9 / oz  
Total cash costs (sold) Silver Equivalent USD 57.6 / oz  

Financials:

Units2022202020192018
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required 52.9  
Revenue M USD  ......  Subscription required  ......  Subscription required 8.9  
After-tax Income M USD  ......  Subscription required  ......  Subscription required -20.1  
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Heavy Mobile Equipment as of November 1, 2018:
HME TypeModelQuantity
Deck & Boom Trucks ....................... Subscription required ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required
Jumbo ....................... Subscription required ....................... Subscription required
Jumbo ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Personnel Carrier ....................... Subscription required ....................... Subscription required
Rock bolter ....................... Subscription required ....................... Subscription required
Scissor Lift ....................... Subscription required ....................... Subscription required
Scissor Lift ....................... Subscription required ....................... Subscription required
Truck (underground) ....................... Subscription required ....................... Subscription required
Truck (underground) ....................... Subscription required ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
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Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Form 10-K 2018
Press Release 2018
Press Release 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Press Release 2011
Technical Report 2010
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