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United States
Moss Mine (Moss Expansion Project)

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 Location:
9 km SE from Bullhead City, Arizona, United States

  Address:
2011 Plata Caleta
Bullhead City
Arizona, United States
86442
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  • Mining
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  • Reserves
  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2025
Latest NewsElevation Gold Reports Q4 2022 Production Results     January 17, 2023


Owners

Source: p. 12
CompanyInterestOwnership
Elevation Gold Mining Corp. 100 % Indirect
Golden Vertex Corp. (operator) 100 % Direct
The Moss mine project is 100% owned by Golden Vertex Corp. Golden Vertex Corp. is wholly-owned subsidiary of Elevation Gold Mining Corporation.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Epithermal
  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The Moss deposit is a steeply dipping (average 70°) quartz-calcite vein and stockwork system, which extends over a strike length of approximately one mile in the resource area (Moss Open Pit and West Pit), but can be traced for 3.9 miles in total length. The Moss Vein system is considered a high level, low-sulfidation (adularia-sericite) epithermal gold-silver deposit in the classification of Heald et al (1987) and White and Hedenquist (1995). Low sulfidation epithermal deposits form from hydrothermal waters in the relatively near-surface environment, typically within 1.5 km of the earth’s surface (Taylor, 2007). They are commonly found associated with magmatism and volcanism, but are somewhat distal (vertically or laterally) from the actual center of magmatism, in environments where meteoric waters have mixed with and diluted magmatic waters. The quartz-calcite vein textures at Moss (massive, breccia, vuggy, colloform), are typical of low sulfidation epithermal veins. Gold occurs as very fine native gold and electrum, and silver typically occurs as electrum and very fine grained acanthite, similar to other lowsulfidation precious metals deposits. The very low (usually trace) levels of base metals in the Moss ores are also consistent with high-level low-sulfidation gold deposits. Alteration related to main-stage precious metals mineralization is confined to silicification and minor sericitization of wall rock adjacent to the veins. The Moss mineralization differs from typ ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Moss deposit is currently being mined by conventional open pit hard rock mining methods by contract miner McCoy and Sons Inc. (“McCoy”) with drilling and blasting subcontracted to WESCO. This mine plan is based on a continuation of contract mining.

Mining of the deposit is accomplished with 70-100 ton rigid frame haul trucks and front end loaders. Excavators are used for loading in areas where dilution could be an issue at ore waste boundaries. Mining geometries have been designed with nominal 200 ft operating widths to allow for equipment operating room. Mining occurs at 20-ft bench heights. The pit configuration is triple benched with catch benches every vertical 60 ft.

The crusher is planned to operate for 323 days per year with a throughput rate of 11,000 tons per day. This requires an ore production rate of approximately 888 ktons of ore to be sent to the crusher each quarter. Mining is expected to last for four years from Q3 2021 – Q2 2025.

Mine Phase Designs
A total of four phase or pushback designs were developed to achieve the ultimate pit design. Phase designs are practical expansions of the mine excavation that incorporate haul road designs, operating room for equipment and all practical mining requirements.

Design Parameters
Pit slope angles are based on recommendations from a March 2017 report from Golder and Associates Inc. “Pit Slope Design Recommendations Moss Gold-Silver Project”. The Golder report re ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:
The Company changed its year end to December 31.

CommodityUnits2021202020192018
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required6,701
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2021202020192018
Total tonnes mined  ......  Subscription required  ......  Subscription required5,772,992 t
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,842,709 t746,131 t
Waste  ......  Subscription required  ......  Subscription required3,930,283 t
Tonnes milled  ......  Subscription required  ......  Subscription required1,749,491 t
Daily milling rate  ......  Subscription required  ......  Subscription required4,793 t
Stripping / waste ratio  ......  Subscription required  ......  Subscription required2.13
Daily processing capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at July 1, 2021:
Mineral Reserves are tabulated at a 0.21 g/t gold cutoff grade.

Mineral Resources are tabulated at a 0.15 g/t gold cutoff grade.

CategoryTonnage CommodityGradeContained Metal
Proven 4,611 kt Gold 0.46 g/t 68.1 koz
Proven 4,611 kt Silver 5.8 g/t 858.8 koz
Probable 8,133 kt Gold 0.44 g/t 116.4 koz
Probable 8,133 kt Silver 5.1 g/t 1,342 koz
Proven & Probable 12,744 kt Gold 0.45 g/t 184.5 koz
Proven & Probable 12,744 kt Silver 5.4 g/t 2,201 koz
Measured 8,398 kt Gold 0.4 g/t 107.4 koz
Measured 8,398 kt Silver 5.1 g/t 1,389 koz
Indicated 30,460 kt Gold 0.39 g/t 382.8 koz
Indicated 30,460 kt Silver 4.5 g/t 4,365 koz
Measured & Indicated 38,857 kt Gold 0.39 g/t 490.2 koz
Measured & Indicated 38,857 kt Silver 4.6 g/t 5,754 koz
Inferred 6,562 kt Gold 0.35 g/t 73.8 koz
Inferred 6,562 kt Silver 4.5 g/t 940 koz

Commodity Production Costs:

CommodityUnits20212020
Cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required
Cash costs Gold USD  ......  Subscription required
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units202120202019
Sustaining costs M USD  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment as of July 1, 2021:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer ....................... Subscription required ....................... Subscription required Leased
Dozer (rubber tire) ....................... Subscription required ....................... Subscription required Leased
Drill (blasthole) ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required 9 cu. yd ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required 10 cu. yd ....................... Subscription required Leased
Loader (FEL) ....................... Subscription required 13 cu. yd ....................... Subscription required Leased
Rockbreaker ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 100 t ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 70 t ....................... Subscription required Leased
Truck (water) 8000 gallons ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 1, 2021
....................... Subscription required ....................... Subscription required Subscription required Sep 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 31, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsYear
Subscription required Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Management Discussion & Analysis 2018
Press Release 2018
Quarterly Report 2016
Feasibility Study Report 2015
Subscription required - Subscription is required.

News:

NewsDate
Elevation Gold Reports Q4 2022 Production Results January 17, 2023

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