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Peru
Arcata Mine

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 Location:
176 km NW from Arequipa, Peru
  Regional Office:
Calle La Colonia No. 180 Urb. El Vivero
Santiago de Surco
Lima
Peru
Phone  ...  Subscription required
Fax+511-437-5009
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News
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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Silver
  • Gold
Mining Method
  • Overhand stoping
  • Mechanized Cut & Fill
  • Paste backfill
Processing
  • Flotation
Mine Life12 years (as of Jan 1, 2013)
The mine was placed on temporary care and maintenance in February 2019.

Owners & OPERATOR

Source: p. 109
CompanyInterestOwnership
Hochschild Mining Plc. 100 % Indirect
Compañía Minera Ares S.A.C. (operator) 100 % Indirect
Hochschild Mining Plc. indirectly owns 100% interest in the Arcata mine through its wholly owned subsidiaries Compañía Minera Ares S.A.C. and Compañía Minera Arcata S.A.
Deposit Type

  • Epithermal
  • Vein / narrow vein

Summary:

The Arcata mine is conformed by vein systems where the epithermal vein deposits are of an intermediate sulphidation type with predominant silver values and variable quantities of gold and base metals. The main structures at Arcata are Mariana NE, Blanca, Amparo, Ramal Leslie, Alexia and Marion. The known structures at Arcata extend over 29 kilometres.

Mining Methods

  • Overhand stoping
  • Mechanized Cut & Fill
  • Paste backfill

Summary:

The veins are mined by conventional and mechanised (trackless) cut-and-fill breast or overhand stoping methods utilising timber support.

Crushing and Grinding
Crusher / Mill TypeModelSizePowerQuantity
SAG mill
Ball mill

Processing

  • Flotation

Flow Sheet: Subscription required

Summary:

The plant at Arcata produced silver/gold bulk concentrate by flotation.

Recoveries & Grades:

CommodityParameter201920182017201620152014
Silver Head Grade, g/t 298321308337323286
Gold Head Grade, g/t 0.940.991.071.240.990.85

Production:

CommodityUnits201920182017201620152014
Silver koz  ......  Subscription required  ......  Subscription required4,3916,3435,6135,827
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Equivalent koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required677,309 t648,051 t701,947 t
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required2,500 t
Daily processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required1,750 t
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGradeContained Metal
Measured & Indicated 2,138,000 t Silver 421 g/t 29 M oz
Measured & Indicated 2,138,000 t Gold 1.35 g/t 93 koz
Measured & Indicated 2,138,000 t Silver Equivalent 538 g/t 37 M oz
Inferred 3,533,000 t Silver 371 g/t 42.1 M oz
Inferred 3,533,000 t Gold 1.26 g/t 142.6 koz
Inferred 3,533,000 t Silver Equivalent 479 g/t 54.4 M oz

Commodity Production Costs:

CommodityUnits201920182017201620152014
Total cash costs Silver USD  ......  Subscription required  ......  Subscription required 14.5 / oz 11 / oz 11.7 / oz 12.6 / oz
All-in sustaining costs (AISC) Silver Equivalent USD  ......  Subscription required  ......  Subscription required 18.4 / oz 13.7 / oz 14.3 / oz 17.7 / oz
All-in sustaining costs (AISC) Gold Equivalent USD  ......  Subscription required  ......  Subscription required 1,362 / oz 1,014 / oz
Subscription required - Subscription is required.

Operating Costs:

Units201920182017201620152014
Total operating costs ($/t milled) USD 182.2167.7124.8101.1109.189.1

Financials:

Units201920182017201620152014
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 14.6   28.9  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 107.42   106.06  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -0.38  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -1.34  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -1.34   -1.34  
Subscription required - Subscription is required

Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 24, 2020
....................... Subscription required ....................... Subscription required Subscription required Dec 24, 2020
....................... Subscription required ....................... Subscription required Subscription required Dec 24, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Corporate Presentation 2017
Annual Report 2016
Corporate Presentation 2016
Annual Report 2015
Corporate Presentation 2013
Subscription required - Subscription is required.

Aerial view:

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