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Mexico
San Martin Mine

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 Location:
250 km N from Guadalajara, Jalisco, Mexico

  Address:
Km. 0.5 Carr. a la Joya
San Martin de Bolanos
Jalisco, Mexico
46350
Phone  ...  Subscription required
Fax01-(437)-952-5351
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeUnderground
Commodities
  • Silver
  • Gold
Mining Method
  • Cut & Fill
Production Start...
Mine Life2022
In July 2019, the Company announced the temporary suspension of all mining and processing activities at the San Martin operation due to a growing level of insecurity in the area and safety concerns for the Company’s workforce. The Company is working with authorities to attempt to secure the area, although it is not known when that might if ever occur.


Owners

Source: p. 91
CompanyInterestOwnership
First Majestic Silver Corp. 100 % Indirect
Minera El  Pilón S.A. de C.V. (operator) 100 % Direct
The San Martín Silver Mine is owned and operated by the Company’s wholly-owned indirect subsidiary, Minera El Pilón, S.A. de C.V.

Contractors

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Deposit Type

  • Epithermal
  • Vein / narrow vein


Summary:

The San Martín mine is considered to be a typical example of a low sulfidation epithermal deposit, and the geological model used for exploration as well as the mineral resource estimation is that of a low sulfidation vein type deposit. Epithermal deposits form at shallow depths in volcanic-hydrothermal and geothermal environments, typically at temperatures between 160°C and 300°C (White and Hedenquist, 1995). They define a spectrum with two end members, low and high sulfidation (Hedenquist et al., 1998).

Fluid inclusion microthermometry carried out in sphalerite, quartz and fluorite for the Zuloaga vein indicates average homogenization temperatures and salinities of 297°C and 4.1 wt% NaCl eq (Albinson et al., 2001). The homogenization temperatures and low salinities (diluted fluids) in the Zuloaga vein and the alteration-mineral assemblage (interstratified illite/smectite in Zuloaga and Rosario) are consistent with low sulfidation vein-type deposits described by White and Hedenquist (1995) and Hedenquist et al. (1998). The presence of epidote in Zuloaga, Rosario and Other Veins is also consistent with the homogenization temperatures around 300°C determined for Zuloaga by Albinson et al (2001).

In the opinion of the QP, the deposits in the San Martín mine area are considered to be examples of low sulfidation epithermal deposits. The Miocene age of the mineralization and its association with volcanic rocks of the Upper Volcanic Series is also found for ot ........


Mining Methods

  • Cut & Fill


Summary:

San Martín veins and deposits are hosted on the side of a mountain range. Access to the workings is through adits developed horizontally, followed by ascendant and descendent ramps developed in waste.

All mine workings in San Martín are located above the water table, and no evidence of water bodies have been found during exploration. There are water inflows in the workings close to surface, mainly during the rainy season, but these inflows are managed by pumping.

Geotechnical studies have been completed in support of design parameters for the excavations, as well as ground support requirements.

San Martín currently uses cut-and-fill mining using resue to extract the mineralization. Resue is a mining variation that implements a two-phased process where the ore is extracted first and then the mining section is extended to allow access to mining equipment for subsequent cuts. A combination of jumbo and conventional (hand-held pneumatic) drills are used and the type of drill used depends on mining widths and availability of the jumbos.

The current minimum mining width used at site for cut-and-fill mining is 0.8 m, and 2.5 m for equipment access. After the resue portion is mined (typically the mineralization), additional waste is mined to allow for equipment access. Mined waste either reports to the surface waste storage facility or is used as fill for subsequent lifts. When mineralization that is greater than 2.5 m in width is mined, no ........


Crushing and Grinding
Source: Subscription required

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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits201920182017201620152014
Silver Payable metal oz  ......  Subscription required1,744,3931,820,4751,901,0602,293,5251,826,284
Silver Metal in doré oz  ......  Subscription required1,746,1391,822,2971,902,9632,296,9651,833,618
Gold Metal in doré oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent Metal in doré oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Tonnes milled 101,362 t284,656 t278,252 t297,802 t349,193 t363,951 t
Daily milling capacity 1,300 t1,300 t1,300 t1,300 t1,300 t
Daily milling rate 816 t1,000 t
Daily mining capacity 900 t

Reserves at December 31, 2021:

CategoryOreTypeTonnage CommodityGradeContained Metal
Measured Oxide 70 kt Silver 221 g/t 500 koz
Measured Oxide 70 kt Gold 0.4 g/t 0.9 koz
Measured Oxide 70 kt Silver Equivalent 255 g/t 580 koz
Indicated Oxide 958 kt Silver 277 g/t 8,510 koz
Indicated Oxide 958 kt Gold 0.53 g/t 16.3 koz
Indicated Oxide 958 kt Silver Equivalent 321 g/t 9,890 koz
Measured & Indicated Oxide 1,028 kt Silver 273 g/t 9,020 koz
Measured & Indicated Oxide 1,028 kt Gold 0.52 g/t 17 koz
Measured & Indicated Oxide 1,028 kt Silver Equivalent 317 g/t 10,470 koz
Inferred Oxide 2,533 kt Silver 226 g/t 18,400 koz
Inferred Oxide 2,533 kt Gold 0.36 g/t 29 koz
Inferred Oxide 2,533 kt Silver Equivalent 256 g/t 20,870 koz

Commodity Production Costs:

CommodityUnits20192018201720162015
Credits (by-product) Silver USD -4.58 / oz   -2.66 / oz   -2.9 / oz  
Cash costs Silver USD 10.7 / oz   9.19 / oz   8.65 / oz  
Total cash costs Silver USD  ......  Subscription required 13.2 / oz   11.3 / oz   9.72 / oz   9.18 / oz  
Total cash costs Silver USD  ......  Subscription required† 9.42 / oz†   6.69 / oz†   7.07 / oz†   6.29 / oz†  
All-in sustaining costs (AISC) Silver USD  ......  Subscription required† 12.3 / oz†   9.06 / oz†   9.4 / oz†   9.22 / oz†  
† Net of By-Product.

Operating Costs:

Units20192018201720162015
UG mining costs ($/t milled) USD 25.120.920.1
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units2019201820172016
Sustaining costs M USD  ......  Subscription required 4.5   3.6  
Capital expenditures M USD  ......  Subscription required 9.3   10.8   6.4  
Revenue M USD  ......  Subscription required 33.9   39.7   37.2  
Operating Income M USD  ......  Subscription required 2.4   12.1   11.6  



Heavy Mobile Equipment as of December 31, 2016:
HME TypeSizeQuantity
Drill (long hole) ....................... Subscription required
Drill jumbo (single boom) ....................... Subscription required
Load-Haul-Dump (LHD) 1 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) 2 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) 3.5 cu. yd ....................... Subscription required
Truck (haul) 11 cu. yd ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 16, 2022
....................... Subscription required ....................... Subscription required Subscription required May 16, 2022
....................... Subscription required ....................... Subscription required Subscription required May 16, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2013

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Press Release 2018
Form 40-F 2017
Annual Report 2016
Financial Review 2016
Technical Report 2016
Form 40-F 2015
Technical Report 2013
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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