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United States
Pine Grove Project

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 Location:
34 km S from Yerington, Nevada, United States

  Project Contacts:
912 N. Division Street
Carson
Nevada, United States
89703
Phone  ...  Subscription required
Fax(775)-885-1720
WebsiteWeb
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life6 years (as of Jan 1, 2015)


Owners

Source:
CompanyInterestOwnership
Lincoln Gold Mining Inc. 100 % Indirect
Lincoln Gold US Corp. 100 % Direct
Lincoln Gold Mining Inc. is an advanced-stage gold mine exploration and development company holding a 100% interest in the Pine Grove Gold Project.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Vein / narrow vein


Summary:

The Pine Grove Property is located within the Walker-Lane mineral trend. According to Stone (2008), the style of mineralization encountered at the Pine Grove project most closely resembles the “Shear Zone” subtype of the “Plutonic-Related Au Quartz Veins and Veinlets L02” deposit type as described by Lefebure and Hart (2005). In particular, the gold mineralization at the Pine Grove project has the following features in common with the “Plutonic-Related Au Quartz Veins and Veinlets L02” deposit type:

Commonly found in tectonic settings of continental margin sedimentary assemblages where intruded by plutons behind margin arcs. Typically developed late in the orogeny or post-collisional settings.

Host rocks are equigranular granodiorite with associated, highly differentiated, porphyritic dikes.

Mineralization can be divided into intrusion-related, epizonal, and shear veins. Intrusionrelated mineralization typically occurs in widespread sheeted vein arrays parallel to the major structural trends. Veins are commonly just hairline fractures to a few centimeters wide and hosted by extensional shears. Veins contain native gold, pyrite, chalcopyrite, and pyrrhotite. Gangue consists of quartz, and sulfides comprise less than 3 percent of the veins. Epizonal mineralization is typically less focused and may be disseminated or occur as replacements. The shear-vein style of mineralization may occur in fault zones outside of the pluton.

Alteration ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Hydraulic excavators and rubber-tired front-end loaders were chosen as primary loading units. The loading units were matched to the contractor specified 100-ton haul trucks. This equipment is a good match for the size of the conceptual pits. Initial pit development may be performed using same equipment fleet as specified for production mining.

In general, backfilling of the Wheeler pit is considered economically and environmentally appropriate. Since the Wheeler Pit would conceptually be mined first, it would probably be backfilled with waste from the Wilson pit. As mining progresses, a minor quantity of fill material may be required on a bench by bench basis to provide temporary ramps in areas with difficult access. Access ramps to the upper levels of the pits would mainly be internal to the pits and would be mined out as the pit progresses downward.

The Wheeler Pit would conceptually be mined out at the beginning of Year 3. The Wilson Pit would be completed during the third quarter of Year 4. Crusher feed is assumed to be 80,000 tons per month. Contractor production will be about 275,000 total tons per month for the first twelve months of mining and then will increase to approximately 300,000 total tons per month through the remainder of the mine life.


Crushing and Grinding
Flow Sheet: Source


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Gold oz 100,623

Operational Metrics:

Metrics
Daily milling capacity 3,300 tons of ore *
Waste tonnes, LOM 10,475 k tons *
Ore tonnes mined, LOM 3,374 k tons *
Total tonnes mined, LOM 13,849 k tons *
Tonnes milled, LOM 3,374 k tons of ore *
Annual production capacity 27 koz of gold *
* According to 2015 study.

Reserves at September 12, 2019:

CategoryTonnage CommodityGradeContained Metal
Indicated 5,888,107 tons Gold 0.036 oz/ton 210,962 oz
Inferred 43,450 tons Gold 0.03 oz/ton 1,324 oz

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Gold USD 843 / oz *  
Assumed price Gold USD 1,425 / oz *  
* According to 2015 study / presentation.

Operating Costs:

Units2015
Processing costs ($/ton milled) USD 13.9 *
* According to 2015 study.

2015 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
G&A costs $M USD 10.2
Total OpEx $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of February 4, 2015:
HME TypeModelQuantity
Dozer ....................... Subscription required ....................... Subscription required
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Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Feb 2, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
Preliminary Economic Assessment 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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